PARTIAL RESULTS OF EXPLORATION. 
Meteorological Observations at stations on the route. 
461 
I—From register kept by Mr. James Doty, at Fort Benton, Upper Missouri river, latitude 47° 49’ 34” N. Approximate 
longitude 110° 35’ W.; approximate elevation 2, 329 feet. 
Date. 
1853. 
October 
November .-- 
December. -- 
7a. 
Mean temperatures. | 
Extreme temperatures. 
m, | 2p.m. |9 p. m.| Monthly | 
| mean. 
fo) ° ° 
61 51 53 
7 27.5 | 18 19, 4 
| | 
w7 | 40.94 | 30.4 | 33.03 | 
Upper. 
60 
Day and hour. 
{_———— 
17th, 2 p. m. 
20th, 2 p. m. 
&th, 2 p. m. 
Lower. 
—2 
Day and hour. 
23d, 7 a. m. 
Remarks. 
But a slight quantity of rain 
fell. Of snow there were 34 
inches—24 inches on the 
24th, and 3 inch on the 31st. 
The general direction of the 
wind was west-southwest. 
Of snow 2% inches fell. The 
general direction of the wind 
was north. 
Clear weather prevailed. The 
general direction of the wind 
was southwest. 
II.—F rom register kept under the direction of Lieutenant John Mullan, United States army, at Cantonment Stevens, Bitter 
Root valley, Washington Territory. Approximate latitude 46° 19’ 15” N.; approximate longitude 113° 55’ W. 
Date. 
Jan., 1854 .... 
Feb., 1854.... 
March, 1854... 
April, 1854... 
May, 1854 .... 
Barometer. 
S bs 
= ats 
aa ooa 
28 ee” 
oO O'S 
= = 
26.354 | 26. 360 
26.215 | 26.207 
26.144 | 26.117 
25.982 | 25,933 
25.976 | 25.891 
Extremes of the barometer before and after re- Mean temperatures. 
ductions to freezing pvuint. 
F 
g 
Upper. |Dayandhour.| Lower. |Dayandhour.| 7 a.m. | 2 p.m. | 9 p.m. = 
| 
E 
= 
° ° co) ° 
26.870 | 5th,7 a.m. | 26.020 3d, 7a.m.| 12.10 | 16.87 | 12.82 13. 93 
reduced 25.985 | 24th, 2 p.m. 
26. 956 25.965 | 24th, 9 p.m. 
reduced 
26. 005 
26. 035 
26. 015 
26.570 | Ist, 9p.m. | 25.630 | 11th,7a.m.| 28 37.15 | 28.87 31. 34 
reduced reduced 
26. 590 25. 617 
26.480 | 31st,7 a.m. | 25.785 | 10th,7a.m.| 37.8 46.5 34.2 39.5 
reduced reduced 
26. 476 25.751 
26. 500 Ist,7 a.m.) 25.195 | 18th,2p.m.| 46 58.5 46.9 50.5 
reduced reduced 
26. 495 25. 089 
26. 340 9th,7 a.m. | 25.295 | 2ist,7am.| 53.2 62.7 49.8 54.8 
reduced reduced 
26. 319 25. 212 
