Index uppermost. Instrument inverted.
A + 6'. 35" B - 5'. 00"
6 . 35 4 . 55
6 . 40 5 . 00
———— ————-
Mean 6 . 36.7 Mean 4 . 58.3 B.
Mean + 6 . 36.7 A.
————-
4) 11 . 35
2 . 53.7 Dip.
3 . 49 Tabular.
55 Difference -
————-
Height of the eye, 15 feet.
Parts of the horizon observed, SE. and NW.
Thermometer { Air 64º
{ Sea 59º
Depth of the sea, 222 feet.
Latitude 34º. 57' south.
Longitude 20º. 15' east.
Cape Lagullus due north, distant 6 or 8 miles.
Calm all day; sky clear, and weather hazy.
On the 29th and 30th of July we were off the Cape, but the weather was so bad as to prevent any sights being taken.
[Transcriber's Note: The final column of each of the following tables is transcribed beneath the table.]
—+————+——+—————-+——-+———-+———-+——-+———-+———+———+
| |Height Dip. |Diff.|Then. |Differ.| | | | |
| | of +—————-+—+—+—-+—-+—-+—-+ | | Long.|Sound-|
No. Date. |eye.| Obs. |Tab.|+ |- |Sea|Air| + | - |Baro.| Lat. | East.| ings.|
—+————+——+———+——+—+—+—-+—-+—-+—-+——-+———-+———+———+
|1816. |f. i|' " |' "| "| "| º | º | | | | º ' | º ' | feet |
18|June 16.|15 3|4 35.0|3 50|45| |83 |82-|1/2| |29.86| 5 11 S|106 3 | 60 |
| | | | | | | |1/2| | | | | | |
19|June 16.|15 3|4 33.0|3 50|43| |83-|82 | 1-| |29.86| 5 05 S|106 10| 56 |
| | | | | | |1/2|sh.|1/2| | | | | |
| | | | | | | |{85| | | | | | |
20|June 16.|14 0|3 59 |3 41|18| |84-|{sh|1/2| |29.83| 5 05 S|106 10| 48 |
| | | | | | |1/2|{95| | | | | | |
| | | | | | | |{su| | | | | | |
21|June 16.|14 |4 01 |3 41|20| |83 |81 | 2 | |29.85| 5 05 S|106 10| 57 |
22|June 27.|16 |4 21.0|3 56|25| |84 |82 | 2 | |29.81| 6 49 N|107 49| |
23|June 28.|16 |4 22.2|3 56|26| |84 |82 | 2 | |29.80| 8 00 |108 10| |
24|July 3. |16 |4 08.2|3 56|12| |84-|81 | 3-| |29.77|13 29 |112 59| |
| | | | | | |1/2| |1/2| | | | | |
25|July 6. |16 |3 53 |3 56| | 3|84 |83-|1/4| |29.75|20 00 |114 | |
| | | | | | | |3/4| | | | | | |
27|July 7. |15 3|4 3 |3 50|13| |85 |85 | | |29.79|21 11 |114 | |
28|July 8. |14 6|3 49 |3 45| 4| |84-|82 | 2-| |29.72| | | |
| | | | | | |1/2| |1/2| | | | | |
29|July 16.|15 3|3 27 |3 50| |23|79 |79 | | |29.75|24 37 |118 56| |
30|July 21.|15 3|3 44 |3 50| | 6|77-|76 | 1-| |29.78|34 |124 | 270 |
| | | | | | |1/2| |1/2| | | | | |
31|July 23.|15 3|3 49 |3 50| | 1|77 |82 | |5 |29.78|35 |124 | |
32|July 23.|15 3|3 49 |3 50| | 1|77 |82 | |5 |29.78|35 |124 | |
33|July 23.|15 3|3 44 |3 50| | 6|77 |82 | |5 |29.78|35 |124 | |
35|July 27.|15 3|4 02 |3 50|12| |76 |76 | | |29.70|38 55 |118 50| 72 |
36|July 27.|13 |3 35 |3 33| 2| |76 |76 | | |29.70|38 55 |118 50| 78 |
37|July 28.|15 3|4 21 |3 50|31| |83 |84 | |1 |29.62|38 50 |118 00 20 |
38|July 28.|15 3|4 06 |3 50|16| |83 |84 | |1 |29.62|38 50 |118 00| 20 |
—+————+——+———+——+—+—+—-+—-+—-+—-+——-+———-+———+———+
Remarks.
—-+—————————————————————————————————————+
18 |Weather hazy. The low land of Sumatra just visible. The land wind has |
|been blowing gently for about four hours. |
19 |East and west parts of the horizon observed. Coast of Sumatra just |
|visible. Hazy. The land-wind dying away. |
20 |The day has been extremely hot, and almost a calm. The sea-breeze not yet |
|set in, only a few light flaws. |
24 |A fresh breeze from WNW. The sun set in fiery dirty red clouds. Weather |
|squally, with occasional showers of rain. Parts of the horizon observed |
|east and west. |
25 |Weather remarkably fine; sky clear; and a gentle breeze from the south. |
|The sun set about five minutes after these observations were taken. |
|Parts of the horizon observed east and west. |
27 |The forenoon has been extremely hot and oppressive. A rolling swell from |
|the SW. |
28 |Parts of the horizon observed SSW and NNE, the first clear to seaward, |
| the other clear horizon, but the mainland of China behind it, and |
|various islands on each side of the NNE line. |
29 |Very hazy weather: sky fiery. |
30 |Clear weather, with a light breeze from the eastward. Sun set behind a |
|low range of dark clouds: sky in that quarter was unusually red. A long |
|swell from the northward. |
31 |Wind light from south; horizon uncommonly well defined and sharp; sky |
|clear; and the sea perfectly smooth. These sights, and the two following, |
|may be depended on, I think, within ten seconds. |
32 |Circumstances similar to No. 31. |
33 |Parts of the horizon observed were that immediately under the setting |
|sun; viz. W 21º N, and the opposite E 21º S, the sun being about 4º high. |
|Day has been remarkably clear, although the wind has been from the |
|southward, which in these seas is said generally to bring fogs. |
35 |Weather somewhat hazy; wind easterly. |
36 |Wind easterly. |
37 |These sights were taken while at anchor off the mouth of the Pei-ho. The |
|fort of Tung-coo, on the south bank of the river, bearing W 50º N, distant|
|about four or five miles. |
—-+—————————————————————————————————————+
—+————+——+—————-+———+————+———+——-+———+———+———+
| |Height Dip. |Diff. |Then. |Differ.| | | | |
| | of +—————-+——+-+—-+—-+—-+—-+ | | Long.|Sound-|
No. Date. |eye.| Obs. |Tab.| + |-|Sea|Air| + | - |Baro.| Lat.| East.| ings.|
—+————+——+———+——+——+-+—-+—-+—-+—-+——-+———+———+———+
|1816. |f. i|' " |' "|' " |"| º | º | | | | º ' | º ' | feet |
39|July 28.|15 3|3 46 |3 50| |4|82 |83-| | 1-|29.61|38 50 |118 | 23 |
| | | | | | | |1/2| |1/2| | | | |
40|July 29.|15 3|5 3 |3 50|1 13| |84 |81 | 3 | |29.60|38 50 |118 | 18 |
41|July 29.|15 3|4 00.9|3 50| 10| |84 |83 | 1 | |29.58|38.50 |118 | 20 |
42|Aug. 6. |15 3|5 09 |3 50|1 29| |80 |79 | 1 | |29.64|38 50 |118 | 22-|
| | | | | | | | | | | | | | 1/2|
43|Aug. 6. |15 6|4 54 |3 53|1 1| |81-|83-| | 2 |29.64|38 50 |118 | 29 |
| | | | | | |1/2|1/2| | | | | | |
44|Aug. 6. |15 3|4 47 |3 50 57| |81-|83-| | 2 |29.64|38 50 |118 | 29 |
| | | | | | |1/2|1/2| | | | | | |
45|Aug. 6. |15 3|4 59 |3 50|1 9| |81-|83-| | 1-|29.64|38 50 |118 | 29-|
| | | | | | |1/2|1/2| |1/2| | | | 1/2|
46|Aug. 6. | 3 9|2 39 |1 54| 45| |81 |84-| | 3-|29.62|38 50 |118 | 30 |
| | | | | | | |1/2| |1/2| | | | |
47|Aug. 6. | 6 |3 26 |2 25|1 1| |81 |84-| | 3-|29.62|38 50 |118 | 30-|
| | | | | | | |1/2| |1/2| | | | 1/2|
48|Aug. 6. |15 3|4 59.2|3 50|1 9| |82 |80 | 2 | |29.59|38 50 |118 | 30 |
49|Aug. 8. |15 3|5 47 |3 50|1 57| |78 |69-| 8-| |29.65|38 50 |118 | 26 |
| | | | | | | |1/2|1/2| | | | | |
50|Aug. 8. |15 3|5 49 |3 59|1 59| |78 |69-| 8-| |29.65|38 50 |118 | 26 |
| | | | | | | |1/2|1/2| | | | | |
51|Aug. 8. |15 3|5 47 |3 50|1 57| |77-|73 | 4-| |29.66|38 50 |118 | 24 |
| | | | | | |1/2| |1/2| | | | | |
52|Aug. 9. |15 3|4 30.4|3 59| 40| |79-|75 | 4-| |29.72|38 50 |118 | |
| | | | | | |1/2| |1/2| | | | | |
53|Aug.10. | 5 6|5 18.3|2 20|2 58| |77 |75 | 2 | |29.69|38 50 |118 | 5 |
54|Aug.10. | 5 6|4 28.3|2 20|2 8| | | | | | |38 50 |117 55| |
55|Aug.10. | 5 6|4 7 |2 20|1 47| |77 |75 | 2 | |29.69|38 50 |117 55| 12 |
56|Aug.10. | 5 6|3 55 |2 20|1 35| |77 |75 | 2 | |29.69|38 50 |118 | 13 |
—+————+——+———+——+——+-+—-+—-+—-+—-+——-+———+———+———+
Remarks.
—+—————————————————————————————————————-+
39|The day has been exceedingly close with little wind. |
40|There has been little wind this morning, after a very close night. |
41|Nearly calm, there being only a very light air from the SE.—Day sultry. |
42|Weather hazy; sky clear overhead; sea remarkably smooth; wind north. |
43|Moderate breeze from SE by S; rather hazy; but the horizon sharp and |
|distinct. And this together with the four following observations, may be |
|taken as very accurate, every circumstance being most favourable. |
45|Parts of the horizon observed E by N and W by S. |
46|Parts of the horizon observed SSE and NNW. Wind SE. |
47|Wind SE. |
48|Parts of the horizon observed E and W. The day, which has been remarkably |
|fine, has resumed towards sunset a wild, stormy aspect. Wind fresh at SE. |
49|Parts of the horizon observed E by S and W by N. This morning unusually |
|clear; so that when the sun's semi-diameter only was above the horizon, |
|it was painful to look at him. The horizon has a rugged appearance. |
50|Parts of the horizon observed NNE and SSW. Wind NNW, moderate. |
51|Weather remarkably clear; horizon still rugged; wind NNW, moderate. |
52|This morning cloudy, and looks rainy but the air seems clear. Parts of the |
|horizon observed NW by W and SE by E. |
53|Parts of the horizon observed N by E and S by W. Instrument readjusted. |
|Wind WNW. |
54|Parts of the horizon observed WSW and ENE. Wind NW. These observations |
|were taken close to the low land, near the mouth of the Pei-ho. The night |
|had been cold, and the morning was still keen; but unfortunately there |
|was no thermometer in the boat; I suppose, however, that the air was |
|about 66º At the time these sights were taken, I observed a vessel bearing |
|N by W, the lower half of whose sail was inverted. |
55|Wind NW. |
56|Wind NW. Parts of the horizon observed NW and SE. During these |
|observations,(53, 54, 55, 56) the vessels near the land had more or less |
|an inverted image under them. |
—+—————————————————————————————————————-+