| Place. | Date. | Time. | Thermo- meter. | Wind. | Remarks. |
|---|
| A. | W. | W. B. |
|---|
| 1851. | | ˚ | ˚ | ˚ | | |
| Huallaga River | Aug. 4 | 3 p.m. | 84 | 72 | . . . | . . . | Many obstructions from pebbly shoals, small rocky islets, and drift-wood. |
| Do. | 4 | 8 p.m. | 78 | . . . | . . . | Southward. | Lt. breeze; cloudy; river not navigable for anything but a canoe. |
| Do. | 5 | 7 a.m. | 75 | . . . | 70 | Calm. | Cloudy; river 60 yards broad; smooth; current 3 miles; depth 1½ fathom; pebbly bottom. |
| Do. | 5 | 5 p.m. | . . . | . . . | . . . | . . . | Heavy clouds, with thunder and lightning in the northwest; during the night a fresh puff of wind from that direction; passed several rapids to-day; also through a hilly country, which accounts for the stormy weather. |
| Do. | 6 | 6 a.m. | 70 | 71.5 | 70 | Westward. | Light breeze and light rain; river to-day free from rapids, with some obstructions from drift-wood between the islands; average depth 2½ fathoms; average current 1½ mile; passed a range of hills on the right; mountains in sight, bearing from northwest to west; heavy cumulus clouds in the northeast, with thunder; thick stratus clouds in northwest. |
| Do. | 6 | 5 p.m. | 78 | 76 |
| Do. | 7 | 7 a.m. | 71.5 | . . . | 71.5 | Calm. | Cloudy; upper stratum, light cirrus clouds; lower, cirro-cumulus, moving to southwest; river 50 yards broad; current 3¼ miles; depth 2¾ fathoms. |
| Do. | 7 | Noon | . . . | . . . | . . . | N. and W. | Breeze light; heavy clouds in the north, with thunder; passed one or two salt streams and several rapids; rain all night. |
| Tocache | 8 | 7 p.m. | 73 | . . . | . . . | Calm. | Cirrus clouds. |
| Do. | 9 | Noon | 77 | 75.5 | 73 | Calm. | Cumulus clouds. |
| Do. | 9 | 3 p.m. | 79 | . . . | . . . | . . . | Squall from the northward, with rain. |
| Do. | 10 | 7 a.m. | 68 | 73 | 66.5 | . . . | Cloudy; mist rising from from the river and hanging on the hills. |
| Do. | 10 | 1 p.m. | 82 |
| Do. | 10 | 5 p.m. | 82 | . . . | . . . | Northward. | Squall of wind from the northward, with a short shower of rain. |
| Do. | 11 | 8 a.m. | 70 | 74 | 68 | Calm. | Misty. |
| Do. | 11 | 1 p.m. | 82 | . . . | . . . | . . . | Heavy clouds, with thunder, to the northward and eastward. |
| Do. | 11 | 6 p.m. | 83 |
| Do. | 11 | 9 p.m. | 79 |
| Do. | 12 | 8 a.m. | 69 | 74 | 68.5 | Calm. | Cloudy; river here 50 yards broad, 3 fathoms deep; smart shower, from the southward and eastward, between 1 and 2 p.m.; passed several rapids, which make the river innavigable; rain all night. |
| Huallaga River | 13 | 8 a.m. | 76 | . . . | . . . | Calm | River 70 yards broad, with 4 miles of current; many rapids. |
| Sion | 13 | 5 p.m. | 80 |
| Do. | 14 | 8 a.m. | 71 | . . . | 70 | Calm | Clear. |
| Do. | 14 | 1 p.m. | 84 | . . . | . . . | . . . | Cumulus clouds to the eastward. |
| Do. | 14 | 8 p.m. | 74 | . . . | 70 | Calm | Clear. |
| Huallaga | 15 | 9 a.m. | 70 | . . . | . . . | . . . | Passed to-day several dangerous rapids, effectual bars to navigation. |
| Do. | 16 | 8 a.m. | 76 | . . . | . . . | Northward | Light breeze; at noon entered the mouth of the Huayabamba; 100 yards broad; shallow; clear water; pebbly bottom; rapid current. |
| Lupuna | 16 | 6 p.m. | 84 | . . . | 76 | . . . | Clear; river to-day broad and shallow; current 3¾ miles; left Lupuna at 10½ a.m. |
| Huallaga River | 17 | 7 a.m. | 74.5 | . . . | 70.5 | N. and E. | Light air; light clouds; soon dissipated by the sun; at 11¼ passed abreast the town of Juan Juy; at 1 passed the mouth of river Sapo; 50 yards broad; muddy; hilly country; heavy clouds and rain. This is always the case where a range of hills rises above the plain. The Indians speak of "Cerros mui bravos," to indicate the fierceness of the weather about them. Arrived at Juan Comas at 5 p.m. |
| Juan Comas | 18 | 7 a.m. | 70 | 74 | . . . | Northward | Light breeze; thick mist; left Juan Comas at 7.30 a.m. |
| Huallaga River | 18 | 11 a.m. | 82 | 76 | . . . | Northward | Sun 108°; cumulus clouds; at 2¼ passed the mouth of river Mayo, coming in on the left between moderately high hills, about 30 yards broad. Just above the Mayo the Huallaga contracts to 40 yards, with 5 and 6 fathoms of depth, and a current of 4¼ miles per hour. At 2.20 arrived at Shapaja, the port of Tarrapoto. |
| Shapaja | 18 | 6 p.m. | 74 | . . . | 72 | N. and E. |
| Do. | 19 | . . . | . . . | . . . | . . . | . . . | Rained in showers all the morning. |
| Tarrapoto | 20 | Noon | 78 |
| Shapaja | 22 | 7 a.m. | 75 | 77 | . . . | . . . | Left Shapaja at 8½ a.m.; passed the malos pasos of the Pongo or Strait of Chasuta. These are called Estero, Canoayacu, Matijuelo, and Chumia, and are the most difficult of the river. At 2.20 p.m. arrived at Chasuta. |
| Chasuta | 23 | 4 p.m. | 82 | . . . | 77 |
| Do. | 24 | 8 a.m. | 74 | . . . | 69.5 | Northward | Light air; misty. It seems very generally misty in the morning, but the clouds yield to the sun about 10 a.m. Cumulus clouds in the horizon. |
| Do. | 24 | Noon | 79 |
| Do. | 24 | 7 p.m. | 76 | . . . | . . . | Eastward |
| Huallaga River | 25 | Noon | 86 | 76 | . . . | . . . | Left Shapaja at 11 a.m.; river below Shapaja flows through the pongo; narrow, tranquil, and deep; country generally flat, with a few hills here and there. At 3¼ p. m. entered a more hilly country; river narrow, shallow, and rapid, about 40 yards wide, with 2½ fathoms of depth, and about 5 miles of current. |
| Do. | 25 | 6 p.m. | 75 | . . . | . . . | Calm. |
| Do. | 26 | 6 a.m. | 76 | 76 | . . . | . . . | Started at 5½ a.m. misty morning; rain from 4 to 5; shores of the river hilly and bold; 9½ fathoms water; hard bottom. At 6¼ passed the end of the Pongo de Chasuta, and entered a flat country where the river spreads out very wide, and has many small islands. In passing the channels between these islands we had but from 3 to 5 feet water, pebbly bottom, current very rapid; passed these sandy flats in an hour, and found the river 150 yards broad, without obstruction, with 3½ fathoms depth, and a velocity of only 2 miles the hour. Here I take to be the head of navigation on this river. Passed the mouth of the Chipurana; the first musquitoes; much dew. |
| Do. | 26 | 6 p.m. | 78 |
| Do. | 27 | 6 a.m. | 74 | 76 | . . . | Eastward | Light breeze; foggy; saw light-colored porpoises; a small seal; got turtle-eggs; cumulus clouds; sun 102. |
| Do. | 27 | Noon | . . . | . . . | . . . | N. and E. |
| Do. | 27 | 7 p.m. | 75 | . . . | . . . | Calm. | Clear; heavy dew; no rocks or stones since passing the pongo. |
| Do. | 28 | 6 a.m. | 70 | 78 | . . . | Calm. | Clear; started at 6; arrived at Yurimaguas at 8¾; left at 11½. |
| Do. | 28 | 4 p.m. | 87 | . . . | . . . | . . . | Current 2¼ miles the hour; large sand islands in the river. |
| Do. | 28 | 7 p.m. | 82 | . . . | . . . | Calm. | Clear; much dew. |
| Do. | 29 | 6 a.m. | 70 | 79 | . . . | Calm. | Clear. |
| Do. | 29 | 8 a.m. | 76 | . . . | . . . | Eastward | Light breeze;cirrus clouds. | Stopped at 5 p.m.on a sand beach on the right bank. This beach stretches out into the river and occupies nearly its whole bed, leaving a narrow channel between it and the left shore, where I found but 5 feet water, though there is probably more depth very close in shore. The beach belongs to what is an island when the river is full, but the right-hand channel is now dry. At 6 p.m.fresh squall of wind and rain from the northward and eastward. |
| Do. | 29 | Noon | 84 | . . . | . . . | Northward. | Cumulus clouds; sun 110. |
| Do. | 29 | 6 p.m. | 82 | . . . | . . . | N. and E. | |
| Huallaga | 30 | 6 a.m. | 72 | . . . | . . . | N. and W. | Light breeze; stratus clouds. |
| Sta. Cruz | 30 | Noon | 85 |
| Do. | 30 | 8 p.m. | 80 | . . . | . . . | . . . | Heavy dew. |
| Huallaga | 31 | 6 a.m. | 76 | . . . | . . . | Calm. | Cloudy and misty. |
| Do. | Sept. 1 | 6 a.m. | 74 | 80 | . . . | Calm. | Misty. |
| Do. | 1 | Noon | 87 | . . . | . . . | N. and E. | Heavy clouds and rain both in the northeast and southwest with an occasional spit at us. |
| Do. | 1 | 2 p.m. | 85 | . . . | . . . | N. and E. |
| Laguna | 2 | 8 a.m. | 74 | . . . | . . . | . . . | Rain all the morning in showers. |
| Do. | 2 | 4 p.m. | 83 | . . . | . . . | . . . | At night clear; much dew. |
| Do. | 3 | 6 a.m. | 75 | . . . | . . . | Calm | Cloudy; left Laguna at 9¼ a.m.; arrived at mouth of Huallaga at 4 p.m.; it flows into the Marañon in a southeast direction. There are several islands at the the mouth. The channel runs near the left bank and has 7¼ fathoms. |
| Do. | 3 | 10 a.m. | . . . | 81 |
| Do. | 3 | 4 p m. | 80 | 82 |
| Amazon | 4 | 6 a.m. | 74 | 80 | . . . | N. and E. | Light breeze; cloudy; shores of Amazon low; water very muddy; many shovel-nosed porpoises in the river. At noon heavy clouds; squally appearances, with rain. |
| Do. | 4 | Noon | 75 | . . . | . . . | Northward. |
| Do. | 5 | 6 a.m. | 74 | 80 | . . . | Eastward | Light breeze; cloudy and misty; current 2 miles per hour. |
| Do. | 5 | 3 p.m. | 84 | . . . | . . . | Calm | Cumulus clouds; saw several small seals. |
| Do. | 5 | 6 p.m. | 80 | . . . | . . . | Eastward | Light breeze; clear. |
| Do. | 6 | 6 a.m. | 74 | 80 | . . . | N. and E. | Clouded up at 2 a.m.; squall of wind and rain from the northward and eastward, with thunder and lightning; cleared up at 4; at 2½ p.m. sharp squall of wind and rain. |
| Do. | 6 | 2½ p.m. | 76 | . . . | . . . | N. and E. |
| Do. | 7 | 6 a.m. | 72 | 80 | . . . | S. and E. | Foggy; sun shone out at 7 a.m. |
| Do. | 7 | Noon | 84 | . . . | . . . | N. and E. | Light breeze; cumulus clouds; at 3 p.m. squall of wind and rain from the northward and eastward. |
| Do. | 8 | 6 a.m. | 74 | 80 | . . . | Calm. | At 4½ a.m. squall of wind, rain, thunder and lightning, from the eastward. |
| Do. | 8 | Noon | 82 | . . . | . . . | S. and E. | Heavy cumulus clouds in the north. |
| Do. | 8 | 4 p.m. | 74 | . . . | . . . | N. and E. | Squall of wind and heavy rain, with thunder and lightning. |
| Do. | 9 | 6 a.m. | 72 | 80 |
| Do. | 9 | 1 p.m. | 82 | . . . | . . . | N. and E. | Light breeze; cumulus clouds. |
| Nauta | 9 | . . . | . . . | . . . | . . . | . . . | In afternoon heavy clouds, with thunder in the west; clear night. |
| Do. | 10 | 6½ a.m. | 71 | . . . | 71 | Northward | Light breeze; thin clouds. |
| Do. | 11 | 6½ a.m. | 74 | . . . | . . . | . . . | Thin cirrus clouds. |
| Do. | 11 | Noon | 84 | . . . | 81 | . . . | Heavy cumulus clouds; hot sun. |
| Do. | 12 | 6 a.m. | 76 | . . . | 73 | . . . | Thin cirrus clouds; misty about the horizon. |
| Do. | 12 | Noon | 84 | . . . | 81 | Eastward | Heavy cumulus clouds; powerful sun; shower of rain at 2 p.m. |
| Do. | 13 | 7 a.m. | 74 | . . . | 73 | . . . | Light clouds and mist; soon dissipated by the sun; showers of rain at 2 p.m. and at 7. |
| Do. | 14 | 6½ a.m. | 73 | . . . | 72 | Calm | Cloudy. |
| Do. | 14 | Noon | 84 | . . . | 83 | . . . | Cumulus clouds; two squalls, with showers, in the afternoon—one from southward and the other, and strongest, from northward and eastward. |
| Do. | 15 | 7 a.m. | 76 | . . . | . . . | Westward | The first perfectly clear morning we have seen since entering the Amazon; at 1 p. m. cumulus clouds; shower at 2½. |
| Do. | 15 | 1 p.m. | 86 | . . . | 82 |
| Do. | 16 | 9 a.m. | 82 | . . . | . . . | . . . | Rain; river rose 2 inches since 6 p. m. yesterday. |
| Do. | 17 | 9 a.m. | 78 | . . . | . . . | . . . | Clear; river rose 10 inches in the last 24 hours. |
| Do. | 17 | 1 p.m. | 87 | . . . | 80½ | . . . | Cumulus clouds, with thunder. |
| Do. | 17 | 9½ p.m. | 75 | . . . | . . . | . . . | Rain. |
| Do. | 18 | 9 a.m. | 75 | . . . | . . . | Eastward | Light breeze; cirrus clouds; river rose 10 inches. |
| Do. | 19 | 11 a.m | 82 | . . . | 76 | Calm | Clear all night; river rose 5 inches from 6 p. m. yesterday to 8 a. m.; light cirro-cumulus clouds. |
| Do. | 20 | 9½ a.m. | 81 | . . . | 77 | S. and E. | Clear. |
| Do. | 20 | 3 p.m. | 89 | . . . | 79 | Southward | Cumulus clouds round the horizon. |
| Do. | 20 | 9 p.m. | 78 | . . . | . . . | Calm | Light clouds. |
| Do. | 21 | 9 a.m. | 81 | . . . | . . . | Calm | Cloudy. |
| Do. | 21 | 8 p.m. | 76 | . . . | . . . | . . . | Lightning; heavy squall of wind and rain from southward and eastward; much rain during the night; river rose 2½ inches in the 24 hours. |
| Do. | 22 | 9 a.m. | 77 | . . . | . . . | Calm | Cloudy; river rose 5 inches. |
| Do. | 23 | 9 a.m. | 78 | . . . | 75 | S. and E. | Light breeze; clear last night; river rising. |
| Do. | 23 | 3 p.m. | 88 | . . . | 79 | . . . | At 4 p. m. strong squall of wind from southward and eastward. |
| Do. | 23 | 9 p.m. | 74 | . . . | . . . | Calm | Cloudy. |
| Do. | 24 | 10 a.m. | 81 | . . . | 74 | Eastward | Light breeze; cloudy; river rose 3½ inches. |
| Do. | 25 | . . . | . . . | . . . | . . . | . . . | Left Nauta at 12¼; shores of the river low and thickly covered with trees; heavy cumulus clouds; showers of rain. At 1¼ entered the Ucayali; ¼ mile wide; low green banks; 2 fathoms' depth close to the left bank; current 2 miles per hour. |
| Ucayali | 26 | 6 a.m. | 76 | 83 | . . . | Calm | Light cirrus clouds. |
| Do. | 26 | Noon | 82 | . . . | . . . | S. and E. | Cumulus clouds; hot sun. |
| Do. | 26 | 5½ p.m. | 78 | . . . | . . . | N. and E. | Squall of wind and rain. |
| Do. | 27 | 6 a.m. | 78 | . . . | . . . | Calm | Misty; rained all night. |
| Do. | 27 | Noon | 82 | 83 | . . . | . . . | At 1 rain squall from northward and eastward. |
| Do. | 27 | 3 p.m. | 80 | . . . | . . . | N. and E. | Moderate breeze; cumulus clouds; current 2 miles. |
| Do. | 28 | 8 a.m. | 78 | 82 | . . . | Calm | Cloudy, with rain. |
| Do. | 28 | Noon | 76 | . . . | . . . | Northward | Moderate breeze. |
| Do. | 28 | 6 p.m. | 79 | . . . | . . . | N. and E. | Current 1½ mile. |
| Do. | 29 | 6½ a.m. | 74 | 81 | . . . | Calm | Cloudy; had moderate breeze from northward nearly all night. |
| Do. | 29 | 3 p.m. | 81 | . . . | . . . | N. and E. | Moderate breeze; rain shower. |
| Do. | 29 | 4 p.m. | . . . | . . . | . . . | S. and W. | Fitful breeze; heavy nimbus clouds in all directions. |
| Do. | 30 | 6 a.m. | 76 | . . . | . . . | N. and W. | Light breeze; cloudy. |
| Do. | 30 | 3 p.m. | . . . | . . . | . . . | N. and E. | Squall of wind and heavy shower. |
| Do. | 30 | 6 p.m. | 77 | 82 | . . . | N. and E. | Moderate breeze; stratus clouds; cumuloni in southwest. |
| Do. | Oct. 1 | 6½ a.m. | 76 | . . . | . . . | . . . | Misty morning. |
| Do. | 1 | 1 p.m. | 88 | . . . | . . . | S. by E. | Fresh breeze; wind changed to northward and eastward; in a squall of heavy rain; thunder and lightning. |
| Do. | 2 | 10 a.m. | 77 | 82½ | 76 | Calm | Cloudy. |
| Do. | 2 | Noon | . . . | . . . | . . . | N. and E. | Heavy shower. |
| Do. | 3 | 8 a.m. | 75 | 81 | . . . | Calm | Thin clouds; light cirro-cumulus clouds; hot all day. |
| Do. | 3 | 5 p.m. | 86 |
| Do. | 4 | 6 a.m. | 78 | 81 | . . . | . . . | Clear all night; much dew. |
| Do. | 4 | 3 p.m. | 87 | . . . | . . . | Eastward | Light breeze; small cumulus clouds round the horizon; sun 103½. |
| Do. | 5 | 7 a.m. | 70 | . . . | . . . | Calm | Clear; river rose 6 inches from 8½ p.m. to 5 this morning; clear all night. |
| Do. | 5 | 2 p.m. | 88 | 84 | . . . | Calm | Cumulus clouds; sun 108; current 2¼ miles. |
| Do. | 6 | 7 a.m. | 78 | 83 | . . . | Southward | Light breeze; light cirro stratus clouds. |
| Do. | 6 | 12½ | 85 | . . . | . . . | Eastward | Cumulus clouds; at 2 p.m. squall of wind and rain; at 3 wind changed to southwest; steady rain; current 2½ miles. |
| Do. | 6 | 5 p.m. | 76 | . . . | . . . | Southward |
| Do. | 7 | 6 a.m. | 78 | . . . | . . . | S. and E. | Cloudy. |
| Do. | 7 | 2 p.m. | 84 | . . . | . . . | N. and E. | Light breeze; sun 106; river ½ mile broad; rising fast; trunks of trees beginning to come down the stream. |
| Do. | 8 | 6 a.m. | 77 | 82 | . . . | . . . | At 2½ p.m. squall of wind, shifting suddenly to all points and settling at southwest; heavy nimbus clouds. |
| Do. | 8 | 2 p.m. | 85 |
| Do. | 9 | 4½ p.m. | 84 | . . . | . . . | Calm | Cirro-cumulus clouds; river rose 2 inches last night. |
| Do. | 10 | 6 a.m. | 76 | 80 | . . . | Calm | Thick mist; river fell last night. |
| Do. | 10 | 9 a.m. | 78 | . . . | . . . | Calm | Cumulus clouds; sun oppressive. |
| Do. | 10 | 4 p.m. | 87 | . . . | . . . | Calm | Clear; current 3¼ miles; much dew. |
| Do. | 11 | 5 a.m. | . . . | . . . | . . . | N. and W. | Light breeze; partial stratus clouds. |
| Do. | 11 | 1 p.m. | 85 | . . . | . . . | N. and E. | Rain showers; at 2½ fresh wind from the northward, with rain; sharp lightning in the northeast; at night clouds round the horizon; distant lightning and thunder in the north and north-west. |
| Do. | 12 | 7 a.m. | 79 | 83 | . . . | Westward | Light breeze; cloudy. |
| Do. | 12 | 1 p.m. | 83 | . . . | . . . | Northward | Squall of wind and rain; at 2 calm; heavy rolling thunder in the northwest; at 3 fresh breeze from northward and westward; more rain. |
| Do. | 13 | 6 a.m. | 76 | . . . | . . . | Calm | Cloudy. |
| Do. | 13 | Noon. | 80 | . . . | . . . | S. and E. | Moderate breeze, with showers; thunder. |
| Do. | 13 | 3 p.m. | 79 | . . . | . . . | N. and W. | Moderate breeze; thunder. |
| Do. | 13 | 6 p.m. | 78 | . . . | . . . | N. and E. | Light breeze; thick clouds. |
| Do. | 14 | 7 a.m. | 74 | 80 | . . . | Southward | Light breeze; cirrus clouds. |
| Do. | 14 | 2½ p.m. | 84 | . . . | . . . | Calm | Cloudy. |
| Do. | 14 | 6 p.m. | 82 | . . . | . . . | Westward | Light breeze; heavy clouds in the west; saw the hills about Sarayacu. |
| Do. | 15 | 7 a.m. | 78 | . . . | . . . | Southward | Light breeze; thin clouds; river commenced its regular rise; stopped to breakfast at Tierra Blanca; night cool and cloudy; southerly wind. |
| Do. | 16 | 6 a.m. | 69 | . . . | . . . | Southward | Cloudy; smart cool breeze. |
| Do. | 16 | Noon. | 75 | . . . | 72 | S. and E. | Cumulus stratus clouds. |
| Do. | 16 | 5½ p.m. | 80 | . . . | . . . | Southward | Light breeze; stratus clouds; opposite mouth of river Catalina. |
| Do. | 17 | 7 a.m. | 78 | 80 | . . . | Southward | Light breeze; cirrus clouds; warm and close night. |
| Do. | 17 | Noon. | 80 | . . . | 78 | Southward | Light breeze; cirrus clouds overhead; cumuli around the horizon. |
| Do. | 17 | 6 p.m. | 83 | . . . | . . . | N. and W. | Light air; stratus clouds. The sky of the Ucayali is frequently very soft, rich, and beautiful, after sunset. |
| Do. | 18 | 6 a.m. | 78 | | | |
| Do. | 18 | 11 a.m. | 82 | . . . | . . . | N. and E. | Moderate breeze; cumulus clouds; rain shower in southwest. Entered the caño of Sarayacu. It is about 15 or 20 feet wide and quite deep. About a mile from the entrance, the caño, or arm of the river, receives a small stream, which runs about a mile per hour. The water is clear; its temperature 78, with the air at 84. It is obstructed with the roots and branches of trees, and we had to drag our canoes 2 or 3 miles up the stream to Sarayacu. |
| Sarayacu | 19 | 8½ a.m. | 76 | . . . | 74 | Calm | Large, watery, but light clouds. |
| Do. | 19 | Noon. | 82 | . . . | 79½ | S. and E. | Light breeze. |
| Do. | 19 | 5 p.m. | 82 | . . . | . . . | N. and W. | Moderate breeze; shower of rain—large drops. |
| Do. | 20 | 9 a.m. | 76½ | . . . | 76 | Calm | Cloudy; at noon light rain. |
| Do. | 20 | 3 p.m. | 80 | . . . | 78 | Calm | Clear overhead; cirro-cumulus clouds around the horizon. |
| Do. | 20 | 9 p.m. | 76 | . . . | . . . | Calm | Cirro-cumulus clouds; rain during the night. |
| Do. | 21 | 9 a.m. | 78 | . . . | 76½ | S. and W. | Light air; cumulus clouds. |
| Do. | 21 | Noon. | 80½ | . . . | 78 | Southward | Cumulus clouds, with light rain showers. |
| Do. | 21 | 3 p.m. | 84 | . . . | 80 | Southward | Cumulus clouds. |
| Do. | 21 | 6 p.m. | 82 | . . . | 81 | Calm | Clear. |
| Do. | 22 | Noon. | 84½ | . . . | 81½ | N. and E. | Heavy cumulus clouds; thunder in the west. |
| Do. | 22 | 3 p.m. | 79½ | . . . | . . . | N. and E. | Gusts of wind, with heavy rain clouds. |
| Do. | 22 | 6 p.m. | 78 | . . . | . . . | Calm | Clear overhead; cirro stratus clouds in the horizon. |
| Do. | 23 | 9 a.m. | 74½ | . . . | . . . | Calm | Rain. |
| Do. | 23 | Noon. | 78 | . . . | 77½ | Calm | Clouds, with occasional showers. |
| Do. | 24 | 9 a.m. | 77 | . . . | 77 | Calm | Rain all the morning. |
| Do. | 24 | Noon. | 78 | . . . | . . . | Calm | Cumulus clouds in the horizon. |
| Do. | 24 | 3 p.m. | 79 | . . . | . . . | S. and W. | Fresh breeze, with thunder; shower coming up. |
| Do. | 25 | 9 a.m. | 74 | . . . | 73½ | Eastward | Light breeze; stratus clouds; heavy thunder storm, with rain, lasting about an hour in the afternoon. |
| Do. | 26 | 10 a.m. | 76 | . . . | 74½ | S. and W. |
| Do. | 27 | 9 a.m. | 77 | . . . | . . . | Calm | Cirro-cumulus clouds. River of Sarayacu has risen 7 feet since our arrival; rose, last night, 10 inches. |
| Do. | 27 | Noon. | 78½ | . . . | 77 | S. and W. |
| Do. | 27 | 3 p.m. | 79 | . . . | 77 | Calm | Cumulus clouds in the horizon. |
| Do. | 28 | 9 a.m. | 78 | . . . | 76½ | Calm | First clear night since our arrival in Sarayacu. Left Sarayacu at 10½ a.m. The river of Sarayacu is quite full, but we met with some obstructions from the thick grass and water growth, and from the branches of small trees overhanging the stream. Found the Ucayali much swollen, and nearly covered with drift-wood. Depth here in mid-stream 8 fathoms. |
| Do. | 28 | 6 p.m. | 82 | 78 | 77½ | N.and E. |
| Ucayali | 29 | 9 a.m. | 82 | 79 | 81 | N. and E. | Moderate breeze; thin cirrus clouds. |
| Do. | 29 | Noon | 82 | . . . | . . . | N. N. W. | Moderate breeze; cumulus clouds about the horizon. |
| Do. | 29 | 6 p.m. | 79 | . . . | . . . | N. and E. | Heavy clouds; rain coming up. |
| Do. | 30 | 7 a.m. | 76 | . . . | . . . | N. and E. | Light breeze; cirro-stratus clouds. |
| Do. | 30 | Noon | 82 | 78½ | 79½ | N. and E. | Cumulus clouds; thunder. |
| Do. | 30 | 3 p.m. | 84 | . . . | . . . | E. S. E. | Moderate breeze. At 3½ wind changed to northeast, and brought up rain. |
| Do. | 30 | 5 p.m. | 77 | . . . | . . . | N. and E. | Fresh cool wind, with rain. |
| Do. | 31 | 7 a.m. | 78 | . . . | . . . | S. and E. | Light air; cirro-stratus clouds. |
| Do. | 31 | Noon | 81 | 79 | 80 | Northward | Moderate breeze; cirro-cumulus clouds. |
| Do. | 31 | 3 p.m. | 82 | . . . | . . . | Calm | Heavy rain clouds, with thunder, in the northwest. |
| Do. | 31 | 6 p.m. | . . . | . . . | . . . | Northwest | Light rain; sharp lightning in the northwest. |
| Do. | Nov. 1 | 3 p.m. | 76 | . . . | . . . | S. and E. | Rain all day; examined a pole planted at the village of Guanache as we went up on October 7th; found that the river had risen 9 feet 7 inches in the interim, though it fell a little between October 7th and 15th. |
| Do. | 2 | 7 a.m. | 72 | . . . | . . . | Eastward | Light breeze; light, moist, misty clouds low down; cirro-stratus clouds above; 72° is the least we have yet had the mercury in the Montaña. |
| Do. | 2 | 9 a.m. | 73 | . . . | 73 | Eastward |
| Do. | 3 | 7 a.m. | 76 | . . . | 75 | N. and W. | Cirro-stratus clouds; current 3 miles the hour. |
| Do. | 3 | 3 p.m. | 83 | . . . | . . . | N. and W. | Fresh breeze and rain squall. |
| Do. | 4 | 9 a.m. | 79 | . . . | . . . | Northward | Fine breeze; clear sky; entered the Marañon. |
| Do. | 4 | 10 a.m. | 83 | 79 | 80½ | . . . | Had 3 hours from mouth of Ucayali to Nauta. |
| Amazon | 5 | 5½ p.m. | . . . | . . . | . . . | Calm | Clear; sailed from Nauta; sounded in mid-stream off mouth of Ucayali; 6 and 7 fathoms; hard sand; river 1½ mile wide below island of Omaguas. |
| Omaguas | 6 | 9 a.m. | 81 | . . . | . . . | Calm |
| Amazon | 6 | 11 a.m. | . . . | . . . | . . . | N. and E. | Moderate breeze; cumulus clouds; ¾ of a mile broad; anchored near mid-stream in 14 fathoms water, and found 2½ miles current; shores of the river thickly wooded with apparently small trees. |
| Do. | 6 | Noon | 86 | 81 | 83 | N. and E. |
| Do. | 6 | 3 p.m. | 87 | . . . | 82 |
| Do. | 6 | 6 p.m. | 84½ | . . . | . . . | Westward | Light breeze; heavy cumulo-stratus clouds in the northwest. |
| Iquitos | 7 | 9 a.m. | 82 | . . . | . . . | . . . | Cumulus clouds about the horizon; cirrus overhead. |
| Amazon | 7 | Noon | 86 | 82 | 80½ | N. and E. | Moderate breeze; cumulus clouds. |
| Do. | 7 | 3 p.m. | 87 | . . . | . . . | N. and E. | River at Tinicuro contracts (within its true banks) to ½ a mile; I had no bottom with 25 fathoms; stopped at Pucallpa. |
| Do. | 8 | 3 p.m. | 85 | 82 | . . . | N. and E. | Moderate breeze; cumulus clouds; mouth of Napo 150 yards broad; gentle current; soundings across the mouth 6 and 7 fathoms; current in the Amazon, just below mouth of Napo, 1¾ mile. |
| Do. | 8 | 6 p.m. | 84 |
| Do. | 9 | 9 a.m. | 80 | . . . | 77½ | N. and E. | Moderate breeze; cumulus clouds; arrived at Pebas. |
Pebas, or Eche- nique | 10 | 9 a.m. | 76 | . . . | 75½ | Eastward | Light breeze; cumulo-stratus clouds, threatening rain; squall of rain, thunder, and lightning, from the westward, last night. |
Eche- nique | 10 | Noon | 79½ | . . . | . . . | Southward | Light breeze; clouds breaking up into cumuli; heavy shower in the afternoon. |
| Do. | 10 | 9 p.m. | 77 | . . . | . . . | . . . | Thunder clouds in the north, but settling down. |
| Do. | 11 | 9 a.m. | 77 | . . . | 76 | S. and E. | Moderate breeze; cumulus clouds; clearing up; wind and rain from northward last night. |
| Do. | 11 | 6 p.m. | 76 | . . . | . . . | Calm | Cloudy. |
| Do. | 11 | 10 p.m. | 74 |
| Do. | 12 | 8 a.m. | 76 | . . . | . . . | Calm | A few cirrus clouds. |
| Do. | 12 | Noon | 82 | . . . | 80 | Eastward | Moderate breeze; much rain during the night. |
| Do. | 13 | 9 a.m. | 75 | . . . | 75 | Calm | Lowering cumulo-stratus clouds. |
| Do. | 13 | Noon | 80 | . . . | . . . | Calm | Thin clouds. |
| Do. | 13 | 6 p.m. | 77½ | . . . | . . . | Westward | Moderate breeze. |
| Do. | 13 | 9 p.m. | 76 | . . . | . . . | Calm | Cloudy. |
| Do. | 14 | Noon | 81 | . . . | 78 | N. and E. | Moderate breeze; cumulo-stratus clouds. |
| San José de los Yaguas | 16 | 3 p.m. | 83 | . . . | 79 | Northward | Cumulus clouds. The atmosphere here seems drier than on the banks of the river. We had few musquitoes, through the padre says there are plenty here generally. This little village is about 12 miles ENE of Echenique. The atmosphere seemed particularly clear at night. |
| Do. | 17 | 10 a.m. | 78 | . . . | 76 |
| Echenique | 19 | 9 a.m. | 73 | . . . | 72 | Westward | Moderate breeze. |
| Do. | 19 | Noon | 76 | . . . | . . . | Westward | Light air; cloudy. |
| Do. | 19 | 7 p.m. | 76 | . . . | . . . | Calm | Cirro-stratus clouds. |
| Do. | 20 | 7 a.m. | 73 | . . . | . . . | Calm | Cirrus clouds; the Amazon has fallen considerably during the last two or three days. |
| Do. | 20 | 9 a.m. | 76 | . . . | 76 | S. and E. |
| Do. | 20 | 6 p.m. | 82 | . . . | . . . | Westward | Light breeze; heavy rain during the night. |
| Do. | 21 | 3 p.m. | 80 | . . . | . . . | Eastward | Light breeze; clear overhead; cumulus clouds about the horizon. |
| Do. | 21 | 10 p.m. | 75 | . . . | . . . | Calm | Clear; lightning in the west. |
| Do. | 22 | 9 a.m. | 75 | . . . | . . . | N. and W. | Light breeze; clear. |
| Do. | 22 | Noon | 83 | . . . | 77 | N. and E. | Fresh breeze. |
| Do. | 22 | 6 p.m. | 82½ | . . . | . . . | Northward | Light breeze; at 9 p.m. thermometer 78°; calm. |
| Do. | 23 | 9 a.m. | 77 | . . . | 74½ | Calm | Clear. |
| Do. | 23 | 3 p.m. | 86½ | . . . | 80½ | N. and E. | Fresh breeze; cumulus clouds. |
| Do. | 23 | 6 p.m. | 82½ | . . . | . . . | Calm | Clear. |
| Do. | 23 | 10 p.m. | 79 | . . . | . . . | Calm | Clear. |
| Do. | 24 | 10 a.m. | 79 | . . . | 77½ | Eastward | Light breeze; clear. |
| Do. | 24 | 3 p.m. | 85 | . . . | . . . | Westward | Moderate breeze, after a shower of rain. |
| Do. | 24 | 6 p.m. | 77 | . . . | . . . | Calm | Cloudy, after squall of wind and heavy rain from northeast. |
| Do. | 24 | 10 p.m. | 76 | . . . | . . . | Calm | Rain. |
| Do. | 25 | 10 a.m. | 75 | . . . | . . . | Northward | Light breeze; stratus clouds; much heavy rain during the night. |
| Do. | 25 | 4 p.m. | 80½ | . . . | 77 | N. and E. | Light breeze; clear. |
| Do. | 26 | 9 a.m. | 76 | . . . | . . . | Calm | Light rain. Very heavy rain during the night. At 1½ p.m. sailed from Echenique. This little town is situated on a small stream called Ambiyacu, about ¼ of a mile from its mouth, and 2 miles up the main stream of the Amazon from Pebas. There is an abundance of water (5, 6, and 7 fathoms) from the mouth of the river to the town. The Amazon, below Pebas and above Sancudos islands, is a mile wide, has 11 fathoms of depth, and a current of 2½ miles per hour. |
| Amazon | 26 | 3 p.m. | 77 | . . . | . . . | S. and E. |
| Do. | 26 | 6 p.m. | 76 | . . . | . . . | S. and E. |
Old Cochi- quinas | 27 | Noon | 80½ | . . . | 79 | Calm | Cloudy. The banks of the river here are abrupt, and 25 feet above the water, formed principally of a black, hard clay that looks like coal. |
| Amazon | 27 | 3 p.m. | 85 | . . . | . . . | Calm | Clear overhead; cumulus clouds about the horizon. |
| Do. | 28 | 4½ a.m. | 73 |
| Do. | 28 | 9 a.m. | 81 | . . . | 79 | S. and W. | Moderate breeze; cumulo-stratus clouds. |
| Do. | 28 | Noon | 86½ | . . . | . . . | S. and E. | Light breeze; clear overhead; cumulus clouds about the horizon. |
| Do. | 28 | 3 p.m. | 90 | . . . | . . . | Calm | Thunder clouds coming up from northeast; most of the rain passed to the northward; had some wind. At 6¼ arrived at Moromoroté. |
| Do. | 28 | 6 p.m. | 82 | . . . | 78½ | Eastward |
| Do. | 29 | 9 a.m. | 80 | . . . | 78½ | N. and E. | Light breeze; cumulus clouds round the horizon; clear overhead. |
| Do. | 29 | 4 p.m. | 84 |
| Caballo-cocha | 30 | 9 a.m. | 79 | . . . | 77½ | Calm | Cirro-cumulus clouds. |
| Do. | 30 | Noon | 80 | . . . | . . . | . . . | Sun shining through thin clouds. |
| Do. | 30 | 3 p.m. | 83 | . . . | . . . | Westward | Light breeze; cumulo-stratus clouds; heavy rain all night. |
| Do. | Dec. 1 | Noon | 76 | . . . | . . . | . . . | Light rain. |
| Do. | 1 | 3 p.m. | 79 | . . . | 76 | Westward | Light breeze; cloudy. |
| Do. | 1 | 6 p.m. | 75 | . . . | . . . | Calm | Stratus clouds; partly clear; much rain during the night. |
| Do. | 2 | 9 a.m. | 76 | . . . | . . . | Calm | Cloudy. Sailed from Caballo cocha at 2½ p.m.; arrived at Loreto at 7½. River much divided by islands, which appear to be of recent formation, and which change their size and shape with every great rise of the river. |
| Amazon | 4 | 6½ a.m. | 76 | . . . | . . . | N. and E. | Cold wind; rain. Sailed from Loreto. |
| Do. | 4 | 9 a.m. | 81 | 81 | 80 | Calm | Clear; cumulus clouds about the horizon. |
| Do. | 4 | Noon | 84 | . . . | . . . | N. and E. | Light air; sun very hot. |
| Do. | 4 | 3 p.m. | 86 | . . . | . . . | N. and E. | Light air; cumulus clouds. Arrived at Tabatinga. |
| Tabatinga | 5 | Noon | 84 | . . . | . . . | N. and E. | Moderate breeze; showery. River here straight and narrow, (½ a mile;) no islands. |
| Do. | 6 | 9 a.m. | 79 | . . . | 79 | Calm | Cloudy; rain all the morning. Left Tabatinga at 1½ p.m. |
| Amazon | 7 | 6 a.m. | 75 | . . . | . . . | Calm | Cloudy. River 1½ mile wide; 11 fathoms deep in the middle, and with a current of 2¾ miles per hour. |
| Do. | 7 | 9 a.m. | 78 | 82 | 76 | Calm |
| Do. | 7 | Noon | 80 | . . . | . . . | Calm | Between 9 and noon there has been a breeze from northward and eastward, with light rain. |
| Do. | 7 | 3 p.m. | 76½ | . . . | . . . | Northward | Fresh breeze; blowing in squalls; quite a sea in the river. |
| Do. | 7 | 6 p.m. | 75 | . . . | . . . | Northward | Light air; squally appearances; severe squall during the night from the eastward. |
| Do. | 8 | 9 a.m. | 75 | 79 | 74 | S. and E. | Light breeze; stratus clouds; rainy morning; rain at intervals all day. |
| Do. | 9 | 6 a.m. | 74½ | . . . | . . . | Eastward | Moderate breeze; light rain. |
| Do. | 9 | 1 p.m. | 80 | 81 | 78 | Calm | Cloudy; banks of the river generally low, though there are reaches where the banks are 30 or 40 feet high, and of white or red clay. |
| Do. | 9 | 3 p.m. | 82 | . . . | . . . | Calm |
| Do. | 9 | 9 p.m. | . . . | . . . | . . . | . . . | Heavy rain from southward and eastward, with much thunder and lightning. At 4¼ entered the mouth of the Iça, a fine looking river of ½ a mile width at the mouth, though opening into a sort of estuary of a mile. Found 23 fathoms of depth in the middle, and a current of 3 miles the hour. The Amazon has islands in this estuary curtaining the mouth of the Iça to the southward. |
| Do. | 10 | 6 a.m. | 75 | . . . | . . . | Northward | Light breeze; light cirrus clouds. | Went ½ mile up the Tunantins river to the village; river 75 yards broad, and has 5, 4, and 3 fathoms up to the town, except at the mouth, where there is a bar of but 1, running well out in to the Amazon. |
| Do. | 10 | 9 a.m. | 80 | . . . | 78 | N. and E. | Light air; cirro-cumulus clouds. |
| Do. | 10 | 3 p.m. | 81 | . . . | . . . | Eastward | Light breeze; heavy threatening clouds in the northwest. |
| Do. | 11 | 6 a.m. | 77 | . . . | . . . | Westward | Light breeze; cumulo-stratus clouds. |
| Do. | 11 | Noon | 82 | 82 | 80 | Calm | Cirro-cumulus clouds; at 2 squall of wind from northward and eastward, with shower. |
| Do. | 11 | 3 p.m. | 80 | . . . | . . . | Calm | Clear overhead; cumulus clouds about the horizon. |
| Do. | 12 | 6 a.m. | 77 | . . . | . . . | Northward | Light breeze; cirro-stratus clouds. The heads of the islands are generally bluff, and they tail down to low sandy points. There are many evidently new islands in the river. At 2 p.m. air 85, sun 111; heavy squall brewing in the east; came on, with rain in large drops from the northeast; fresh breeze. |
| Do. | 12 | 3 p.m. | 82 | . . . | . . . | Calm. |
| Do. | 12 | 6 p.m. | 81 | . . . | . . . | N. and E. |
| Do. | 13 | 6 a.m. | 76 | . . . | . . . | N. and E. | Moderate breeze; cirro-stratus clouds; quite cool. |
| Do. | 13 | 9 a.m. | 76½ | 80 | 77 | S. and E. | Light air; cirro-stratus clouds; went into Fonteboa. |
| Do. | 13 | 3 p.m. | 85 | . . . | . . . | N. and E. | Light breeze; cumulo-stratus clouds. |
| Do. | 14 | 6 a.m. | 75 | . . . | . . . | S. and E. | Light air; sun shining white through the mist. |
| Do. | 14 | 9 a.m. | 79 | 81 | 78 | S. and E. | Moderate breeze; cumulus clouds; at 10 entered mouth of Juruá; ½ a mile wide at the mouth; 11 fathoms deep; current 1½ mile the hour; bottom fine white and black sand; temperature of water 82. |
| Do. | 14 | 3 p.m. | 77 | . . . | . . . | Eastward | Light breeze, with light rain. |
| Do. | 15 | 9 a.m. | 76 | . . . | . . . | S. and W. | Moderate breeze, with cold rain. |
| Do. | 15 | 3 p.m. | 83 | . . . | . . . | Calm | Heavy rain, with thunder passing from south of us to the westward. |
| Do. | 16 | 6 a.m. | 75 | . . . | . . . | S. and W. | Light breeze; cirro-stratus clouds. |
| Do. | 16 | 9 a.m. | 77 | 81 | 76 | Calm | Cloudy; entered mouth of the Japurá at 3 p.m.; temperature of its water 85; ½ a mile up found 9½ fathoms, at the mouth 7; current ¾ of a mile; clear night. |
| Do. | 16 | Noon | 80 | . . . | . . . | Calm. |
| Do. | 17 | 6 a.m. | 74 | . . . | . . . | S. and E. | Fresh breeze; cloudy; cold. |
| Do. | 17 | 9 a.m. | . . . | . . . | . . . | Calm | Light rain; entered the river Teffé; 150 yards broad; water clear, dark-green color; very little current. |
| Egas | 18 | 3 p.m. | 80 | . . . | 78½ | N. and E. | Light breeze; light cirrus clouds; cumuli about the horizon. |
| Do. | 19 | 9 a.m. | 81 | . . . | 78½ | N. and E. | Light breeze; a little hazy. |
| Do. | 19 | 3 p.m. | 84 | . . . | . . . | Eastward | Moderate breeze; cumulus clouds; sun very hot. |
| Do. | 20 | 9 a.m. | 80½ | . . . | 77 | Eastward | Moderate breeze; clear. |
| Do. | 20 | 3 p.m. | 84 | . . . | . . . | Eastward | Moderate breeze; cumulus clouds. |
| Do. | 21 | 9 a.m. | 82 | . . . | 78½ | Eastward | Light breeze; clear. |
| Do. | 21 | 3 p.m. | 87 | . . . | . . . | Eastward | Moderate breezes. |
| Do. | 22 | Noon | 86 | . . . | 82 | N. and E. | Moderate breeze; cumulus clouds. |
| Do. | 22 | 3 p.m. | 86½ | . . . | . . . | Calm | Cumulus clouds. |
| Do. | 23 | 9 a.m. | 83 | . . . | 80½ | Eastward | Moderate breeze; clear; most of the afternoons and evenings here are calm and warm. |
| Do. | 23 | 3 p.m. | 87 | . . . | . . . | Eastward | Light air; heavy cumulus clouds in the horizon; thunder. |
| Do. | 24 | 9 a.m. | 83½ | . . . | 80 | Eastward | Light breeze; cumulo-stratus clouds. |
| Do. | 24 | 3 p.m. | 83½ | . . . | . . . | Eastward | Heavy shower, with one sharp flash of lightning; thermometer at 2½, 88. |
| Do. | 25 | 9 a.m. | 79½ | . . . | . . . | Eastward | Moderate breeze; continuous rain. | In the long route from Tabatinga to Egas, I had got ahead of the rains. They are now catching up. |
| Do. | 25 | 3 p.m. | 80 | . . . | . . . | Calm | Clearing up. |
| Do. | 26 | 9 a.m. | 79 | . . . | . . . | Eastward | Light breeze, with rain squalls. |
| Do. | 26 | 3 p.m. | 80 | . . . | 78 | Eastward | Moderate breeze; cirro-cumulus clouds. |
| Do. | 27 | 10 a.m. | 79 | . . . | 78 | Calm | Cloudy. |
| Do. | 27 | 3 p.m. | 82 | . . . | . . . | Calm | Thunder storm brewing in the northeast. |
| Do. | 28 | 10 a.m. | 78 | . . . | 78 | Eastward | Moderate breeze; cloudy; left Egas at 2½ p.m., in the rain. |
| Amazon | 29 | 6 a.m. | 75 | . . . | . . . | Eastward | Light breeze; cloudy. |
| Do. | 29 | Noon | 83 | 82 | 79 | Eastward | Moderate breeze; cirrus clouds; cumuli in the horizon. |
| Do. | 29 | 3 p.m. | 83 | . . . | . . . | Eastward | Light breeze; clear; fresh breeze from the eastward all night; clear, except a bank of light white clouds in the eastern horizon, breaking off and rising in fleecy flocculi, with cumulus clouds in the northwest. |
| Do. | 30 | 6 a.m. | 78 | . . . | . . . | . . . | Light cirro-cumulus clouds moving from east and northeast. |
| Do. | 30 | 9 a.m. | 78 | 82 | 78 | Eastward | Breeze light; clear overhead. |
| Do. | 30 | 3 p.m. | 86 | . . . | 79 | Eastward | Light breeze; cumulus clouds; at 6 sharp squall of wind and heavy rain from the northward; at 8 arrived at mouth of Lake Coari; light breeze from the northward; heavy clouds, with sharp lightning and thunder in that direction. |
| Lake Coari | 31 | 6 a.m. | 78 | . . . | . . . | Calm | Light breeze. The water of Lake Coari is clear, and of a brown color. A quarter of a mile inside of the canal that connects the lake with the river we found 9 fathoms of depth, with ¾ of a mile current; muddy bottom. The bottom near the shore, in 2 fathoms water, is of sand, mixed with red clay. Thunder and lightning in the north in the early part of the night. |
| Amazon | 31 | 3 p.m. | 84 | 82½ | 80½ | Eastward |
| 1852 | | | | | |
| Do. | Jan. 1 | 6 a.m. | 76 | . . . | . . . | Eastward | Moderate; light cirrus clouds overhead; cirro-cumuli about the horizon. |
| Do. | 1 | 9 a.m. | 79 | 82 | 77 | Eastward | Fresh breeze; quite a sea in the river. |
| Do. | 1 | 3 p.m. | 82 | . . . | . . . | Eastward | Fresh. Passed the mouth of the Codajash. At 8 p.m. calm; nearly clear. |
| Do. | 2 | 6 a.m. | 76 | . . . | . . . | Eastward | Light breeze; stratus clouds. |
| Do. | 2 | 9 a.m. | 77 | 80½ | 76 | Eastward | Fresh breeze. This breeze sets in strong about 9 o'clock; generally continues until 4 or 5, when it goes down until 9 p.m., when it freshens up again, and blows till 2 or 3 in the morning. |
| Do. | 2 | 3 p.m. | 82 | . . . | . . . | Westward |
| Do. | 3 | 6 a.m. | 76 | . . . | . . . | Eastward | Moderate breeze; stratus clouds. |
| Do. | 3 | 9 a.m. | 78 | 81 | 78 | Eastward | Light breeze; cirro-stratus clouds. |
| Do. | 3 | 3 p.m. | 84 | . . . | 82 | N. and E. | Fresh breeze; clear overhead; cumuli about the horizon. This breeze sets in now between 10 and 11, (higher up the river it commenced at 9,) and lasts till 5 p.m.; it gets up again about midnight and lasts till daybreak. Passed the mouth of river Purus; about ¾ of a mile wide; depth 13 fathoms; current about ¾ of a mile per hour; temperature of the water 84½. |
| Do. | 4 | 6 a.m. | 77 | . . . | . . . | Eastward | Light breeze; clear. |
| Do. | 4 | 9 a.m. | 82 | 82 | 78½ | Eastward | Light breeze; clear overhead; cumuli about the horizon. Breeze freshened at 10, and hauled more to the northward. |
| Do. | 4 | 3 p.m. | 83 | . . . | . . . | N. and E. | Fresh breeze; cumulus clouds, thickening and blackening into nimbi. At 3½ sharp squall of wind and rain from the eastward; after the squall the wind fell. At 5 heavy thunder clouds in the south and east; cirrus clouds overhead. |
| Do. | 5 | 6 a.m. | 77 | . . . | . . . | Eastward | Light breeze, with occasional spits of rain; fresh breeze from the eastward, set in at 9 and continued till 4. Entered the mouth of the Rio Negro at 5 p.m.; 2 miles wide; 17½ fathoms deep in mid stream. |
| Do. | 6 | . . . | . . . | . . . | . . . | Eastward | Moderate breeze; blowing in squalls, with rain. At 5½ a.m. arrived at Barra. |
| Barra | 7 | 9 a.m. | 78 | . . . | 77 | Calm | Rain during last night. |
| Do. | 7 | 3 p.m. | 80½ | . . . | . . . | Eastward | Moderate breeze; cloudy. |
| Do. | 8 | 9 a.m. | 80 | . . . | 78 | Calm | Cloudy and showery. |
| Do. | 8 | 3 p.m. | 82 | . . . | . . . | Eastward | Light breeze, (has been fresh;) light cirrus clouds; sun out hot. |
| Do. | 9 | 9 a.m. | 79 | . . . | 78 | Eastward | Light air, with occasional showers. |
| Do. | 10 | 9 a.m. | 78 | . . . | . . . | Eastward | Moderate breeze; rain all the morning. |
| Do. | 10 | 3 p.m. | 80 | . . . | . . . | Eastward | Light breeze; clouds rolled up into cumuli. |
| Do. | 12 | 9 a.m. | 79 | . . . | 78 | Calm | Showery. |
| Do. | 12 | 3 p.m. | 80 | . . . | . . . | Eastward | Light air; heavy rain cloud in the north; rain all the evening. |
| Do. | 13 | 9 a.m. | 79 | . . . | 77 | S. and E. | Light air; misty morning, with showers of rain. |
| Do. | 13 | 3 p.m. | 80 | . . . | . . . | . . . | Heavy cumuli in the northward and eastward. |
| Do. | 14 | 9 a.m. | 80 | . . . | 79 | Calm | Cloudy. |
| Do. | 14 | 3 p.m. | 80 | . . . | . . . | . . . | Showery. |
| Do. | 15 | 9 a.m. | 79 | . . . | 77 | Eastward | Light air. |
| Do. | 15 | 3 p.m. | 81 | . . . | . . . | Eastward | Moderate breeze; cumulus clouds. |
| Do. | 16 | 9 a.m. | 78 | . . . | 77 | N. and E. | Moderate breeze; cloudy; thick rain clouds gathering in northeast. |
| Do. | 16 | 3 p.m. | 80 | . . . | . . . | N. and E. | Moderate breeze; no rain; cloudy at night. |
| Do. | 17 | 9 a.m. | 79 | . . . | 77 | . . . | Heavy and continued rain all the early part of the morning; showery all day. |
| Do. | 17 | 3 p.m. | 79 | . . . | . . . | N. and E. | Light breeze; clouds breaking up into cumuli. |
| Do. | 18 | 9 a.m. | 79 | . . . | . . . | N. and E. | Moderate breeze; cloudy in the morning; smart shower in the afternoon. |
| Do. | 19 | 9 a.m. | 78 | . . . | 76½ | . . . | Cloudy morning; clear in the afternoon and early part of the night. |
| Do. | 20 | 9 a.m. | 78 | . . . | . . . | Calm | Stratus clouds. |
| Do. | 20 | 3 p.m. | 85 | . . . | 77½ | N. and E. | Light breeze; cumulus clouds. Substituted a light gauze covering to the bulb of the thermometer for the thick cotton one it before had, and, instead of dipping it in the water, merely dampened it with a brush. |
| Do. | 21 | 9 a.m. | 79 | . . . | 75½ | Calm. |
| Do. | 22 | 3 p.m. | 82 | . . . | 78 | N. and E. | Moderate breeze; cumulus clouds; rainy morning; showery in the afternoon. |
| Do. | 23 | 9 a.m. | 79 | . . . | 76 | Calm | Cloudy; occasional light showers. |
| Do. | 23 | 3 p.m. | 82 | . . . | . . . | N. and E. | Moderate breeze; cirro-cumulus clouds. |
| Do. | 24 | 9 a.m. | 76 | . . . | 73 | Calm | Showery. |
| Do. | 24 | 3 p.m. | 82 | . . . | . . . | Calm | Cumulus clouds; rain during the latter part of the night. |
| Do. | 25 | 9 a.m. | 78 | . . . | . . . | . . . | Cloudy and sultry all the morning. |
| Do. | 25 | 3 p.m. | 82 | . . . | 78 | Eastward | Light breeze; cumulus clouds; clear at night. |
| Do. | 26 | 9 a.m. | 79 | . . . | 76 | Calm | Sultry; thin stratus clouds. |
| Do. | 26 | 3 p.m. | 80 | . . . | . . . | . . . | Clouds rolled up into cumuli. |
| Do. | 27 | 9 a.m. | 77 | . . . | . . . | . . . | Heavy rain from 4 a.m. to noon. |
| Do. | 27 | 3 p.m. | . . . | . . . | . . . | . . . | Sun out between the clouds; hot. At 5 squall of wind and rain from northward and eastward, with thunder and lightning; rain nearly all night. |
| Do. | 28 | 9 a.m. | 77 | . . . | 76 | Calm | Rainy morning. |
| Do. | 28 | 3 p.m. | 79 | . . . | . . . | . . . | Light stratus clouds; pleasant afternoon. |
| Do. | 29 | 9 a.m. | 77 | . . . | . . . | . . . | Thin cirro-stratus clouds; damp morning. |
| Do. | 29 | 3 p.m. | 82½ | . . . | 78½ | Eastward | Moderate breeze; cirro-cumulus clouds; at 6 smart rain squall from northeast. |
| Do. | 30 | 9 a.m. | 79 | . . . | . . . | Calm | Cloudy; cirro stratus. |
| Do. | 30 | 3 p.m. | 84½ | . . . | 79 | Westward | Light breeze; stratus clouds in the west; cumuli in the east and northeast. |
| Do. | 31 | 9 a.m. | 79 | . . . | . . . | Calm | Thin stratus clouds; light rain occasionally. |
| Do. | 31 | 3 p.m. | 78 | . . . | 75½ | Calm. | Cloudy; showery all the forenoon, with cool damp wind from southward and westward. |
| Do. | Feb. 1 | 9 a.m. | 76 | . . . | . . . | Calm | Cloudy; thin stratus clouds. |
| Do. | 1 | 3 p.m. | 80 | . . . | . . . | Eastward | Light breeze; cirrus clouds. |
| Do. | 2 | 9 a.m. | 79½ | . . . | . . . | Eastward | Light breeze; cirrus clouds; generally clear. |
| Do. | 2 | 3 p.m. | 83 | . . . | 79 | Calm | Cumulus clouds gathering thick in northward and eastward; much heavy rain during the night, with thunder and lightning. |
| Do. | 3 | 9 a.m. | 77 | . . . | . . . | Calm | Cloudy. |
| Do. | 3 | 3 p.m. | 78½ | . . . | 76 | N. and E. | Light breeze; clouds breaking up into light cumuli. |
| Do. | 4 | 9 a.m. | 77 | . . . | . . . | Calm | Clear; fresh pleasant breeze from the eastward, with hot sun, nearly all day; calm, with cirro-cumulus clouds gathering in the evening. |
| Do. | 5 | 9 a.m. | 78 | . . . | . . . | Calm | Clear. |
| Do. | 6 | 9 a.m. | 77½ | . . . | . . . | Eastward | Light breeze; clear. |
| Do. | 6 | 3 p.m. | 82 | . . . | 79 | S. and E. | Light breeze; rain clouds gathering in the southeast; at 4 squall of wind and heavy rain. |
| Do. | 7 | 3 p.m. | 81½ | . . . | 78½ | S. and E. | Light breeze; cumulus clouds. |
| Do. | 8 | 9 a.m. | 78 | . . . | . . . | Eastward | Light breeze; stratus clouds. |
| Do. | 8 | 3 p.m. | 79½ | . . . | 79 | . . . | Shower of rain from southward and eastward, wind afterwards changing to the northward. |
| Do. | 9 | 9 a.m. | 76 | . . . | . . . | Calm | Clear; light cumuli around the horizon, breaking off into cirri. |
| Do. | 9 | 3 p.m. | 81 | . . . | 78 | . . . | Cumulo stratus clouds; has been rain between 9 and 3. |
| Do. | 10 | 9 a.m. | 79½ | . . . | . . . | Calm | Cumulus clouds; sun hot. |
| Do. | 10 | 3 p.m. | 83½ | . . . | . . . | Northward | Light air; rain up the river, in the west; at 4 squall of wind and rain from the eastward. |
| Do. | 11 | 9 a.m. | 80 | . . . | . . . | N. and E. | Moderate breeze; cirro-cumulus clouds; showers during the forenoon. |
| Do. | 11 | 3 p.m. | 83 | . . . | 79 | N. and E. | Cumulus clouds, with cirrus haze overhead. |
| Do. | 12 | 9 a.m. | 79 | . . . | . . . | Calm | Cirro-cumulus clouds; rain squall from the northward all the forenoon after 10. |
| Do. | 12 | 3 p.m. | 78 | . . . | . . . | Calm | Rain all day. |
| Do. | 13 | 9 a.m. | 78 | . . . | . . . | Calm | Cloudy; very pleasant day; rain during the night. |
| Do. | 14 | 9 a.m. | 78 | . . . | . . . | Southwardly | Light breeze; cumulo-stratus clouds. |
| Do. | 14 | 3 p.m. | 78 | . . . | . . . | Calm | Rainy; heavy rain during the night. |
| Do. | 15 | 9 a.m. | 77 | . . . | . . . | Northward | Light air; pleasant morning; at 3 p.m.calm; light drizzle; thermometer 79. |
| Rio Negro | 18 | 8 a.m. | 80 | . . . | . . . | Calm | Cloudy; sailed from Barra at ½ to 9 a.m.; very little current in the river. |
| Do. | 18 | Noon. | 86 | . . . | . . . | Eastward | Fresh breeze; current not sufficiently strong to carry us, with the aid of our 5 paddles, against the breeze; so we had to stop till the breeze went down; dropping rain; thunder. |
| Do. | 18 | 3 p.m. | 77 | 83½ | . . . | S. and E. | Light air; current of the Amazon 1½ mile the hour. |
| Amazon | 19 | 9 a.m. | 82½ | . . . | . . . | Eastward | Light breeze; saw the mark of high water about 8 feet above the present level. |
| Do. | 19 | 3 p.m. | 81½ | . . . | 80 | N. and E. | Light breeze; stratus overhead and to the westward; cumuli in the east. |
| Do. | 20 | 6 a.m. | 76½ | . . . | 75 | Calm | Stratus clouds; rain nearly all night, with distant lightning to the eastward. |
| Do. | 20 | 9 a.m. | 77½ | 82 | . . . | S. and E. | Moderate breeze, with light rain squalls; at 12½ squalls ceased; wind came out from northward and westward light. |
| Do. | 20 | 3 p.m. | 77 | . . . | 77 | N. and W. | Fresh breeze; stopped at mouth of the Madeira. |
| Do. | 21 | 6 a.m. | 75 | 81 | . . . | Eastward | Moderate breeze; cirro-stratus clouds; mouth of the Madeira about 2 miles broad; depth 11 fathoms; current 3½ miles the hour. |
| Do. | 21 | 11 a.m. | 80 | . . . | . . . | Eastward | . . . | Stopped a few hours at Serpa; high-water mark 12 feet above the present level. |
| Do. | 21 | 3 p.m. | 83½ | . . . | 79 | Eastward | Cumulus clouds. |
| Do. | 21 | 6 p.m. | 80 | . . . | . . . | Eastward | Squally, and rainy appearances. |
| Do. | 21 | 9 p.m. | 78½ | . . . | . . . | Calm | Light rain. |
| Do. | 22 | 6 a.m. | 78 | . . . | 76 | N. and E. | Moderate breeze; patches of blue sky, with all sorts of clouds. |
| Do. | 22 | 9 a.m. | 76 | 82 | . . . | N. and E. | Fresh breeze; stratus clouds; quite a high sea; had to stop several hours on account of it. |
| Do. | 22 | 6 p.m. | 80 | . . . | . . . | Eastward | Light breeze; cirro-cumulus clouds. |
| Do. | 22 | Mid. | 77 | . . . | . . . | Eastward | Cool damp breeze. |
| Do. | 23 | 6 a.m. | 76 | . . . | 75 | Eastward | Light breeze; stratus clouds. |
| Do. | 23 | 9 a.m. | 76 | . . . | . . . | N. and E. | Squally, with light rain; stopped at 1 p.m.on account of heavy squall of wind from the northward and eastward, with high sea; current of the Amazon 3¼ miles; it has increased very much since the entrance of the Madeira. |
| Do. | 23 | 9 p.m. | 80 | . . . | . . . | Calm |
| Villa Nova | 24 | 9 a.m. | 76 |
| Amazon | 25 | 6 a.m. | 77 | . . . | 76 | Northward | Light air; stratus clouds; rain till 8½. |
| Do. | 25 | 9 a.m. | 78 | . . . | . . . | Northward | Light air; cirro-cumulus clouds. |
| Do. | 25 | 3 p.m. | 85 | . . . | 80 | Calm | Cirro stratus clouds; rain nearly all night; wind from northward and eastward, with thunder. |
| Obidos | 26 | 10 a.m. | 81 | . . . | . . . | . . . | Rain all the afternoon and nearly all night. |
| Do. | 27 | . . . | . . . | . . . | . . . | N. and E. | Moderate breeze; very pleasant day; rain most of the night. |
| Do. | 28 | . . . | . . . | . . . | . . . | . . . | Rain nearly all the morning and all night. |
| Do. | 29 | 6 p.m. | 79 | . . . | . . . | Southward | Rainy morning; sailed from Obidos; smart rain during the night. |
| Amazon | Mar. 1 | 6 a.m. | 77 | . . . | . . . | S. and E. | Light air; rainy. Entered the Tapajos by a creek 100 yards wide, 5 fathoms deep, and 3 miles long. Tapajos 1¼ mile wide at Santarem; dark water; deep. Heavy rain from 10 p.m.to 1 a.m. |
| Santarem | 2 | 9 a.m. | 79 | . . . | . . . | S. and E. | Moderate breeze; stratus clouds; pleasant day. |
| Do. | 2 | 3 p.m. | 82 | . . . | . . . | . . . | Heavy rain during the night. |
| Do. | 3 | 9 a.m. | 78 | . . . | . . . | S. and E. | Squalls of wind; rain all the early morning. |
| Do. | 3 | 3 p.m. | 81 | . . . | . . . | Eastward | Moderate breeze; clouds and rain down the river. |
| Do. | 4 | 9 a.m. | 78 | . . . | . . . | S. and E. | Rainy morning. |
| Do. | 4 | 3 p.m. | 82 | . . . | 79 | . . . | Cirrus clouds floating about. |
| Do. | 5 | 9 a.m. | 78 | . . . | . . . | S. and E. | Light breeze; cloudy; heavy rain and strong wind from the eastward all last night; from 10 to 3 fresh wind from the northward and eastward, veering to the eastward, with heavy rain. |
| Do. | 5 | 3 p.m. | 81 | . . . | . . . | . . . | Rain again during the night. |
| Do. | 6 | . . . | . . . | . . . | . . . | . . . | Cloudy; showery morning; moderate breeze from the eastward, subsiding into calm, with heavy showers; clear and pleasant afternoon and evening, with light breeze from the westward. The afternoons are mostly clear. |
| Do. | 7 | 9 a.m. | 79 | . . . | . . . | N. and E. | Light breeze; drizzly morning, with showers. |
| Do. | 8 | . . . | . . . | . . . | . . . | . . . | Pleasant day; heavy rain all the afternoon. |
| Do. | 9 | 9 a.m. | 79½ | . . . | . . . | Calm | Cumulo-stratus clouds. |
| Do. | 9 | 3 p.m. | 82½ | . . . | 79 | N. and E. | Light air; a few cirrus clouds. |
| Do. | 10 | 9 a.m. | 78½ | . . . | . . . | . . . | Raining till noon. |
| Do. | 10 | 3 p.m. | 80 | . . . | 78 | Calm | Cumulo-stratus clouds; rain during the night. |
| Do. | 11 | 9 a.m. | 79 | . . . | . . . | Calm | Cloudy; drizzly. |
| Do. | 11 | 3 p.m. | 79 | . . . | 77½ | . . . | Cloudy; pleasant night. |
| Do. | 12 | 9 a.m. | 79 | . . . | . . . | Eastward | Cumulo-stratus clouds; occasional showers; moderate and pleasant breeze. |
| Do. | 12 | 3 p.m. | 80½ | . . . | 79 | N. and E. | Light breeze; cirro-stratus clouds; rain during the night. |
| Do. | 13 | 9 a.m. | 79 | . . . | . . . | S. and E. | Moderate breeze; cumulus clouds; nearly clear all day. |
| Do. | 13 | 3 p.m. | 84½ | . . . | 81 | Eastward | Light breeze; cumulus clouds. |
| Do. | 14 | 9 a.m. | . . . | . . . | . . . | N. and E. | Light breeze; rainy morning; pleasant day. |
| Do. | 14 | 3 p.m. | 82½ | . . . | 79½ | Eastward | Light breeze; cirro-cumulus clouds; at 8 p.m.squall of wind, rain, thunder, and lightning, from northeast; much heavy rain during the night. |
| Do. | 15 | 9 a.m. | 77½ | . . . | . . . | . . . | Rain all the morning. |
| Do. | 15 | Noon. | 78 | . . . | . . . | . . . | Raining. |
| Do. | 16 | 3 p.m. | 82 | . . . | 79 | N. and E. | Moderate breeze; light cirro-cumulus clouds. |
| Do. | 17 | 9 a.m. | 80 | . . . | . . . | Southward | Cool, pleasant breeze; cumulo stratus clouds; hot and close afternoon; heavy squalls of wind, rain, thunder, and lightning, from the northward and eastward. |
| Do. | 18 | 9 a.m. | 78½ | . . . | . . . | Eastward | Light breeze; rainy morning; breeze freshened up, and blew all the forenoon from northward and eastward. |
| Do. | 18 | 3 p.m. | . . . | . . . | 82 | Calm | Close and hot all the afternoon; squall of wind and rain, with thunder and lightning during the night. |
| Do. | 19 | 9 a.m. | 79 | . . . | . . . | N. and E. | Rainy morning; clearing gradually. |
| Do. | 19 | 3 p.m. | 82 | . . . | 80½ | N. and E. | Light air; light cirro-stratus clouds; from 10 p.m. to 6 a.m. heavy rain squalls, with very sharp lightning and thunder. |
| Do. | 20 | 9 a.m. | 79 | . . . | . . . | Calm | Cloudy, but breaking away. |
| Do. | 20 | 3 p.m. | 81½ | . . . | 80 | Eastward | Light breeze; cirro-cumulus clouds. |
| Do. | 21 | 9 a.m. | 79 | . . . | . . . | Calm | Cloudy, stratus; close and calm all day; at sunset misty, smoky atmosphere. |
| Do. | 22 | 9 a.m. | 79 | . . . | . . . | Northward | Light breeze; squally, with occasional showers, during the day. |
| Do. | 22 | 3 p.m. | 76½ | . . . | 75 | N. and E. | Fresh breeze; cumulo-stratus clouds; raining. |
| Do. | 23 | 9 a.m. | 78 | . . . | . . . | N. and E. | Light breeze; cirro-stratus; pleasant day. |
| Do. | 23 | 3 p.m. | 80½ | . . . | 78½ | N. and E. | Light breeze; cirro-stratus. |
| Do. | 24 | 9 a.m. | 79 | . . . | . . . | Eastward | Moderate breeze; cirro-stratus clouds above; light watery cumuli flying, with the wind beneath. |
| Do. | 24 | 3 p.m. | 82 | . . . | 79½ | Eastward | Light breeze; sun hot; pleasant day. |
| Do. | 25 | . . . | . . . | . . . | . . . | . . . | Showery all day; breeze from northward, northward and eastward, and eastward; sun hot. |
| Do. | 26 | 9 a.m. | 79 | . . . | . . . | N. and E. | Light breeze; pleasant, though warm day. |
| Do. | 26 | 3 p.m. | 82 | . . . | 78½ | Eastward | Moderate breeze; cirrus clouds. |
| Do. | 27 | 3 p.m. | 83 | . . . | 80½ | Northward | Light breeze; cumulus clouds; sun hot. |
| Do. | 28 | 3 p.m. | 85 | . . . | 80 | . . . | Moderate breeze from eastward all day; cirro-cumulus clouds; sun hot. Left Santarem at 7 p.m. |
| Amazon | 28 | Mid. | . . . | . . . | . . . | . . . | Squall of wind and rain from northward and eastward, with thunder and lightning; frequent showers during the night. |
| Do. | 29 | 6 a.m. | 79 | . . . | . . . | Calm | Cloudy. |
| Do. | 29 | 9½ a.m. | 82 | . . . | . . . | N. and E. | Moderate breeze; cumulus clouds. |
| Do. | 29 | 3 p.m. | 83 | . . . | 79½ | N. and E. | Light air; cirro-cumulus clouds. |
| Do. | 29 | 6 p.m. | 80 | . . . | . . . | Northward | Light air; at 6½ a fine breeze sprung up from the northward and westward, and arrested the clouds that were flying over the moon from the eastward, banking them up. Lightning in the northeast. The easterly bad weather was too strong; the westerly breeze fell, and we had heavy rain from the eastward. Took shelter in a patch of grass on the right bank at 7 p.m. Started at 8; weather looking dirty, we stopped again at 9; had furious squall of wind, with thunder and lightning, from northeast. |
| Do. | 30 | 6 a.m. | . . . | . . . | . . . | . . . | Heavy rain. |
| Do. | 30 | 9 a.m. | 78 | . . . | . . . | . . . | Rain all the morning. High land of Monte Alegre opposite, accounting for the bad weather. |
| Do. | 30 | 3 p.m. | 81 | . . . | 78 | Calm | Cirro-stratus clouds. |
| Do. | 31 | 6 a.m. | 77 | . . . | . . . | N. and E. | Light breeze; cirro-stratus clouds; cumuli, threatening rain, in east and southeast. |
| Do. | 31 | 9 a.m. | 80 | . . . | . . . | N. and E. | Moderate breeze; cirro-cumulus clouds. |
| Do. | 31 | 3 p.m. | 83 | . . . | 80 | Calm | Cumuli about the horizon; cirrus clouds overhead. |
| Do. | 31 | 6 p.m. | 80 | . . . | . . . | N. and E. | Fresh breeze; cumulo-stratus clouds, threatening rain. We have found cumulus clouds and rain over all the chains of hills we have passed to-day; and this is generally the case. |
| Do. | Apr. 1 | 6 a.m. | 78 | . . . | . . . | N. and E. | Light air; sun rising clear. |
| Do. | 1 | 9 a.m. | 81 | . . . | . . . | N. and E. | Moderate breeze; cumulus clouds. |
| Do. | 1 | 3 p.m. | 80 | . . . | . . . | Eastward | Light breeze, and rainy. |
| Do. | 1 | 6 p.m. | 80 | . . . | . . . | Eastward | Light breeze; stratus clouds; rain during the night. |
| Garupá | 2 | 9 a.m. | 79 | . . . | . . . | Calm | Cirro-cumulus clouds; noticed the tide first at Gurupá; it fell about 2 feet during the 3 hours we were there. |
| Amazon | 2 | 3 p.m. | 83 | . . . | 79 | Calm | Cumulo-stratus about the horizon, threatening bad weather. |
| Do. | 3 | 6 a.m. | 76 | . . . | . . . | Calm | Cirro-stratus clouds. We are now navigating in narrow channels between islands, near the right bank of the Amazon. |
| Do. | 3 | 9 a.m. | 82 | . . . | . . . | Eastward | Light breeze; stratus clouds, breaking up into cumuli; heavy squall of wind and rain from the eastward between 12 and 1 p. m.; rain, in very large drops. |
| Do. | 3 | 3 p.m. | 77 | . . . | . . . | Calm | Rainy. |
| Do. | 4 | 6 a.m. | 77 | . . . | . . . | Calm | Stratus clouds; find the flood tide so strong now as to compel us to stop whilst it is running. |
| Do. | 4 | 9 a.m. | 82 | . . . | . . . | N. and E. | Light air; stratus, breaking into cumuli; at 11 passed Breves. |
| Do. | 4 | 3 p.m. | 85½ | . . . | 82 | Eastward | Light air; heavy cumulus clouds round the horizon; distant thunder. |
| Do. | 5 | 6 a.m. | 78 | . . . | . . . | Calm | Light cirro-stratus clouds. |
| Do. | 5 | 9 a.m. | 80 | . . . | . . . | Eastward | Light air; cumulo-stratus clouds. |
| Do. | 5 | 3 p.m. | 81 | . . . | . . . | N. and W. | Light breeze; cumulus clouds; dirty, disagreeable night; wind from southward and eastward; cold rain. |
| Do. | 6 | 6 a.m. | 76 | . . . | . . . | N. and W. | Light breeze; cloudy, stratus. |
| Do. | 6 | 9 a.m. | 77½ | . . . | . . . | N. and E. | Moderate breeze; cumulo-stratus clouds. |
| Do. | 6 | 3 p.m. | 83 | . . . | 80 | Eastward | Fresh breeze; cumulus clouds. |
| Do. | 7 | 6 a.m. | 78 | . . . | . . . | Calm | Clear; a few watery-looking cumuli about the horizon. |
| Do. | 7 | 9 a.m. | 84 | . . . | . . . | Calm | Heavy cumuli about the horizon; sun very hot. |
| Do. | 7 | 3 p.m. | 86½ | . . . | . . . | S. and E. | Light breeze; cumulus clouds. |
| Do. | 7 | 6 p.m. | 82 | . . . | . . . | Calm | Clear, except in the west; rainy night, with thunder and lightning; wind from the eastward. |
| Do. | 8 | 6 a.m. | . . . | . . . | . . . | Northward | Light breeze; raining hard. | At 8 started to cross Limociro bay, wind blowing fresh; thick mist and rain; smart sea running; lying at an island in Limociro bay. |
| Do. | 8 | 9 a.m. | 78 | . . . | . . . | Northward | Moderate breeze; still raining. |
| Do. | 8 | 3 p.m. | 81 | . . . | . . . | N. and E. | Moderate breeze, with squalls of wind and rain. |
| Do. | 8 | 6 p.m. | 79 | . . . | . . . | N. and E. | Moderate breeze; light, fleecy, and windy-looking clouds; crossed from the island to the western shore of Limociro bay, 5 miles. |
| Do. | 9 | 6 a.m. | 78 | . . . | . . . | Calm | Stratus clouds; entered again into the creeks and channels on the right bank of the Amazon. |
| Do. | 9 | 3 p.m. | 80 | . . . | . . . | Calm | Light stratus clouds. |
| Do. | 10 | 6 a.m. | 76 | . . . | . . . | Calm | Light stratus clouds, with an occasional sprinkle of rain; at town of Sta. Ana. |
| Do. | 10 | 9 a.m. | 79 | 78 | . . . | Calm | Cloudy. |
| Do. | 10 | 3 p.m. | 78 | . . . | . . . | N. and E. | Light breeze; cumulo-stratus clouds; entered the river Moju. |
| Rio Moju | 11 | 6 a.m. | 76 | . . . | . . . | Calm | Stratus clouds. |
| Do. | 11 | 9 a.m. | 78 | . . . | . . . | Eastward | Light breeze; drizzly. |
| Do. | 11 | 3 p.m. | 78 | . . . | . . . | S. and E. | Fresh breeze; misty, with occasional light rain; arrived at Pará at 9½. |
| Pará | 12 | 6 a.m. | 76 | . . . | . . . | Calm | Thin stratus clouds, sun shining through them. |
| Do. | 12 | 11 a.m. | . . . | . . . | . . . | N. and E. | Fresh breeze set in, bringing rain shower. |
| Do. | 12 | 3 p.m. | 80 | . . . | . . . | . . . | Pleasant, clear evening; barometer 29.730. |
| Do. | 13 | 9 a.m. | 81 | . . . | . . . | Calm | Misty morning; usual breeze from NNE., with rain set in at noon. |
| Do. | 13 | 3 p.m. | 82 | . . . | . . . | . . . | Clear evening; barometer 29.690. |
| Do. | 14 | 8 a.m. | 80 | . . . | . . . | Calm | Light cirro-cumulus clouds; breeze from NNE. during the day, with rain. |
| Do. | 14 | 3 p.m. | 83½ | . . . | . . . | . . . | Barometer 29.665. |
| Do. | 15 | . . . | . . . | . . . | . . . | S. and W. | Light breeze; misty morning; wind set in from NNE. at 12, with clouds and rain; continued cloudy, with occasional light rain, till after 3. |
| Do. | 15 | 3 p.m. | 80½ | . . . | 75 | Eastward | Barometer 29.685. |
| Do. | 16 | 9 a.m. | 81 | . . . | . . . | Eastward | Moderate breeze; barometer 29.735; at 12 breeze from ENE., with rain squalls. |
| Do. | 16 | 3 p.m. | 81½ | . . . | 76½ | ENE. | Cumulo-stratus clouds; thunder; barometer 29.675. |
| Do. | 17 | 9 a.m. | 82½ | . . . | 77½ | NE. | Light air; cirro-cumulus clouds; barometer 29.732. |
| Do. | 17 | 3 p.m. | 84½ | . . . | 78½ | NE. | Fresh breeze; cumulo-stratus clouds; barometer 29.640. |
| Do. | 18 | 9 a.m. | 81½ | . . . | 77½ | NE. | Light breeze just set in; light flying cumuli. |
| Do. | 18 | 3 p.m. | 81½ | . . . | 77 | NNE. | Moderate breeze; cumulo-stratus clouds; occasional showers of rain. |
| Do. | 19 | 9 a.m. | 83 | . . . | 78 | Eastward | Light air; watery-looking cumuli moving southwest. |
| Do. | 20 | 9 a.m. | 78 | . . . | . . . | Eastward | Light breeze, and cloudy; cirro-stratus; heavy rain squalls all the forenoon; pleasant afternoon and evening. |
| Do. | 21 | 9 a.m. | 79 | . . . | 76½ | Eastward | Light air; cirro-cumulus clouds. |
| Do. | 21 | 3 p.m. | 81½ | . . . | 77½ | N. and E. | Moderate breeze; heavy cumulus clouds. |
| Do. | 22 | 3 p.m. | 85½ | . . . | 79 | NNE. | Moderate breeze; cumulo-stratus clouds. |
| Pará | 23 | 3 p.m. | 79½ | . . . | 77 | Variable | Light winds; showery; calm in the morning; at 11 the breeze set in from the northward and eastward, with showers. |
| Do. | 24 | 9 a.m. | 79 | . . . | . . . | Calm | Cloudy all the morning. |
| Do. | 24 | 3 p.m. | 80 | . . . | 75 | Westward | Light air; cloudy, stratus. |
| Do. | 25 | 9 a.m. | 79½ | . . . | . . . | Calm | Light cirrus clouds overhead; cumuli about the horizon; during the forenoon moderate breeze from the northwest, changing about 2 p.m.to northward. |
| Do. | 25 | 3 p.m. | 80 | . . . | 76 |
| Do. | 26 | 9 a.m. | 79 | . . . | . . . | Calm | Cloudy, cirro-stratus; pleasant morning. |
| Do. | 27 | 9 a.m. | 75½ | . . . | . . . | WNW. | Cool breeze, with light rain; breeze gradually hauled to the northward and eastward, and the weather changed to pleasant. |
| Do. | 28 | 9 a.m. | 79½ | . . . | 75 | Calm | Cirrus clouds overhead; cumuli about the horizon; pleasant weather. |
| Do. | 28 | 3 p.m. | 84 | . . . | 75½ | N. and E. | Moderate breeze; light cirri overhead. |
| Do. | 29 | 9 a.m. | 80½ | . . . | . . . | NE. | Light breeze; cumulus clouds round the horizon, breaking off and rising up as cirro-cumuli. |
| Do. | 29 | 3 p.m. | 82 | . . . | 77 | NW. | Moderate breeze; heavy clouds in the northwest; light spits of rain from passing clouds. |
| Do. | 30 | 9 a.m. | 80 | . . . | 76 | Northward | Cirro-stratus clouds; sun oppressive. |
| Do. | 30 | 3 p.m. | 80½ | . . . | 76½ | NW. | Moderate breeze; blowing in squalls from NNE. at 2, to NW. at 3; cumulo-stratus clouds, with spits of rain. |
| Do. | May 1 | 9 a.m. | 77 | . . . | . . . | Northward | Moderate breeze, with light clouds and rain. |
| Do. | 1 | 3 p.m. | 82 | . . . | 76 | NNW. | Moderate breeze; cumulus clouds. |
| Do. | 2 | 9 a.m. | 79 | . . . | 75 | NE | During the morning moderate breeze from WSW., (with thin stratus clouds,) hauling round, by west and north to northeast; at 1 clouds breaking up into thin cumuli. |
| Do. | 2 | 3 p.m. | 85½ | . . . | 77½ | WNW. | Clear overhead; cumuli about the horizon. |
| Do. | 3 | 9 a.m. | 80½ | . . . | . . . | Eastward | Light breeze; stratus clouds. |
| Do. | 3 | 3 p.m. | 80 | . . . | . . . | Calm | Showery, with thunder and lightning. |
| Do. | 4 | 9 a.m. | 80 | . . . | 77 | N. and E. | Light breeze; cirro-cumulus clouds. |
| Do. | 4 | 3 p.m. | 80 | . . . | 77 | NNE. | Moderate breeze, (has been fresh, with rain;) cloudy, cumulo-stratus. |
| Do. | 5 | 6 a.m. | 78 | . . . | . . . | Calm | Misty. |
| Do. | 5 | 9 a.m. | 80½ | . . . | 76½ | N. and E. | Light breeze; cirro-cumulus clouds. |
| Do. | 5 | 3 p.m. | 84 | . . . | 78½ | Northward | Moderate, but unsteady and uncertain breeze; heavy rain clouds in northeast and east. |
| Do. | 6 | 9 a.m. | 80 | . . . | 77 | Southward | Light air; cirro-cumulus clouds; very heavy rain between 5 and 8 p.m., with sharp lightning and thunder. |
| Do. | 7 | 9 a.m. | 80 | . . . | 77 | S. and E. | Light breeze; light cirro-cumulus clouds. |