Note. The Expedition arrived at Engineer Cantonment, their wintering post, on the 17th instant.
September 3d, fall of rain 7-8 inch—4th, 1-8 inch—5th, 5-8 inch—7th, 3-8 inch—8th, 5-8 inch.
{lii} Meteorological Register {liii} for the Month of OCTOBER, 1819
| Day of Month | MORNING | MID-DAY | EVENING | Mean Temp. | Mean Temp. at Germantown | REMARKS | BAROMETER | MODIFICATIONS AND COURSES OF CLOUDS | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Morning | Mid-Day | Evening | ||||||||||||||||
| Temperature | Wind | Temperature | Wind | Temperature | Wind | Morning | Noon | Evening | Clouds | Courses | Clouds | Courses | Clouds | Courses | ||||
| 1 | 46 | Calm | 86 | N.W. | 74 | N.W. | 68 | 65 | Atmosphere thick with smoke | 28.73 | 28.54 | 28.56 | Cml, | N.W. | Fair | — | Fair | — |
| 2 | 50 | Calm | 73 | E. | 65 | E. | 62 | — | Atmosphere thick with smoke | 28.74 | 28.62 | 28.62 | Fair | — | Fair | — | Fair | — |
| 3 | 54 | S.E. | 75 | S.E. | 72 | Calm | 67 | — | Atmosphere thick with smoke | 28.54 | 28.45 | 28.38 | Fair | — | Fair | — | Fair | — |
| 4 | 64 | E.S.E. | 90 | S.E. | 86 | S.E. | 80 | 56 | Atmosphere thick with smoke | 28.38 | 28.28 | 28.28 | Fair | — | Fair | — | C, | S.W. |
| 5 | 72 | S.E. | 88 | S.S.E. | 82 | S.S.E. | 80 | 60 | Windy and squally. Atmosphere thick with smoke | 28.38 | 28.35 | 28.35 | Cml, | — | Cm, | — | C, | — |
| 6 | 68 | S.E. | 71 | S.E. | 47 | N.W. | 62 | 66 | Light rain this morning | 28.40 | 28.33 | 28.40 | Ns. | S.W. | Ns. | — | Ns. | — |
| 7 | 36 | N.W. | 39 | N.W. | 38 | N.W. | 37 | 66 | Windy | 28.70 | 28.80 | 28.87 | Ns. | — | Ns. | — | Ns. | — |
| 8 | 32 | N.W. | 38 | N.W. | 36 | N.W. | 35 | 67 | A little ice and snow last night. Windy and light snow this even. | 28.96 | 28.94 | 28.94 | Ns. | — | Ns. | — | Ns. | — |
| 9 | 31 | N.W. | 48 | N.W. | 44 | N.W. | 41 | 70 | Frost last night—windy to-day | 28.88 | 28.83 | 28.72 | Fair | — | C, | — | Fair | — |
| 10 | 38 | S.E. | 68 | N.N.W. | 55 | N.N.W. | 53 | 58 | Windy | 28.71 | 28.66 | 28.67 | C, | — | C, Cml, | — | Ns. | — |
| 11 | 35 | 56 | E.S.E. | 52 | E.S.E. | 47 | 53 | Light sprinkles of rain to-day | 28.88 | 28.88 | 28.96 | Fair | — | Ns. | — | Ns. | W.N.W. | |
| 12 | 43 | Calm | 53 | N.E. | 49 | Calm | 48 | 54 | Fresh breezes of wind all this day | 29.21 | 29.20 | 29.23 | Ns. | — | Cs, | N.W. | Cml, | — |
| 13 | 28 | Calm | 57 | S.E. | 47 | Calm | 44 | 46 | Frost last night | 29.45 | 29.28 | 29.25 | Fair | — | Fair | — | Fair | — |
| 14 | 42 | S.E. | 70 | S.E. | 62 | Calm | 58 | 47 | 29.16 | 28.90 | 28.83 | Fair | — | Fair | — | Fair | — | |
| 15 | 44 | N.N.E. | 58 | N.N.E. | 53 | N.W. | 51 | 52 | 28.69 | 28.64 | 28.65 | C, | N. | Cml, | — | Cml, | — | |
| 16 | 30 | N.W. | 53 | N.W. | 42 | W. | 41 | 57 | Frost last night | 28.87 | 28.78 | 28.78 | Fair | — | Fair | — | Fair | — |
| 17 | 26 | S.E. | 59 | E.S.E. | 51 | S.E. | 45 | 49 | Frost last night—water also froze in a vessel left out | 28.90 | 28.75 | 28.75 | Fair | — | C, | W. | C, | N.W. |
| 18 | 43 | N.N.W. | 57 | W.N.W. | 53 | W.N.W. | 51 | 46 | Windy | 28.64 | 28.61 | 28.61 | C, | N.W. | Cm, | N.W. | Ns, | N.W. |
| 19 | 40 | N.W. | 53 | N.W. | 45 | N.W. | 46 | 46 | High wind this day | 28.76 | 28.76 | 28.76 | Cm, | N.W. | Cm, | N.W. | Ns. | — |
| 20 | 29 | Calm | 53 | N.W. | 45 | W.N.W. | 42 | 47 | Hail last night | 28.95 | 28.95 | 29.00 | Cm, | — | Cm, | — | Cm. | — |
| 21 | 28 | Calm | 49 | S.E. | 46 | S.E. | 41 | 48 | Heavy frost last night | 29.16 | 29.00 | 28.88 | Cs, | N.W. | Cs, | N.W. | Fair | — |
| 22 | 38 | Calm | 74 | Variable | 65 | N.W. | 59 | 42 | High wind this afternoon. Fog on the river this morning | 28.66 | 28.35 | 28.45 | C, | N.W. | C, | — | Fair | — |
| 23 | 40 | N.W. | N.W. | N.W. | 46 | High winds | 28.78 | C, | — | C, | — | C, | — | |||||
| 24 | N.W. | N.W. | N.W. | 48 | High winds | Cs. | — | C, | — | C, | — | |||||||
| 25 | S.S.W. | S.S.W. | S.S.W. | 39 | High winds | C, | — | Fair | — | Fair | — | |||||||
| 26 | 29 | Calm | 56 | S.E. | 54 | S.E. | 46 | 42 | 28.92 | 28.88 | 28.90 | C, | N.W. | C, | — | Fair | — | |
| 27 | 32 | Calm | 59 | Calm | 56 | Calm | 49 | 50 | 28.94 | 28.88 | 28.88 | C, | N.W. | C, | N.W. | C | N.W. | |
| 28 | 32 | Calm | 68 | S.S.W. | 66 | S.S.W. | 55 | 53 | 28.96 | 28.73 | 28.67 | Fair | — | Fair | — | Fair | — | |
| 29 | 39 | Calm | 61 | N. | 57 | N. | 51 | 52 | Frost last night, smoky atmosphere to-day | 28.83 | 28.74 | 28.69 | — | — | — | — | — | — |
| 30 | 31 | Calm | 52 | S.E. | 54 | S.E. | 45 | 52 | Atmosphere filled with dense smoke | 28.88 | 28.73 | 28.64 | — | — | — | — | — | — |
| 31 | 50 | N.W. | 77 | N.W. | 61 | N.W. | 62 | 43 | Atmosphere filled with dense smoke | 28.48 | 28.48 | 28.48 | C, | N.W. | C, | N.W. | C, | N.W. |
Remarkable Phenomena.—The Aurora Borealis appeared in N.N.E. at 8 o'clock on the evening of the 12th, near the horizon, and continued but a short time.
The atmosphere has been very thick with smoke during this month generally, occasioned by the burning of the prairies. This appearance has generally been near the horizon, but at some times, particularly in the latter part of the month, the whole of the sky has been obscured by smoke, bearing much resemblance in the morning, when there was little wind, to a thick fog.
6th—Fall of rain 3-16ths of an inch.