SNOWS OF THE ROCKY, BITTER ROOT, AND CASCADE MOUNTAINS. 399 
| Temperature. 
Date. | Remarks. 
Sunrise. Noon. Sunset. 
co) ° ° 
Jan. Me eaaitcte fasiacod| soveecsseoce.< 55. 50 High SW. wind; heavy clouds. 
3 20 12 6.13 Wind NE., (sunset;) snowing. 
4 —12 —T iF —16.—13 Wind NNW.; at sunrise, snowing; wind W. sunset; clear. 
5 MN | ea acee sincera sias 1.—4 Wind SSW. strong, (sunrise;) same noon; wind S. sunset. 
6 20 17 20. 19 Wind SW. 
7 30 33 32. 32 Wind SW. 
8 | 35 51 | 46. 44 Wind SW. 
9 39 44 38. 40 Wind SW. 
10 16 36 28, 27 Wind SW., (noon and night.) 
11 32 32 32, 32 Wind W. 
12 —16 —2L | —18, —18 Wind NE.; (noon observations taken on dividing-ridge. ) 
13 —24 —19 | —23, —22 Wind NE.; stormy all day. 
14 —25 —15 | —16,—19 Wind NE. 
15 —34 —1 —18,—18 Clear. 
16 —38 —1 —21,—20 Clear. 
17 — 8 8 — 1,— 0,3 | Wind NE. and snowing at sunset. 
18 il See AS a wee eee ah | ——hs=—19 Snowing at sunset a little. 
19 —16 =F | —14,—13 A little snow fell at night. 
20 —23 —2 — 6,—10 
21 +1 7 9.146 Wind at sunrise NE., and snowing; at sunset, wind SW.; clear. 
22 +1 7 +4 Arrived at Fort Owen. 
atl) |lessaetSesde See9 42 39 Cloudy. 
31 55 52 42 Wind SW..; rainy. 
Feb. 1 28 25 25 
2 13 34 26 
3 13 39 39 Wind SW. at sunset; cloudy. 
4 36 42 39 
5 15 42 30 
6 26 34 35 Wind SW.,; sunrise, cloudy. 
7 33 41 36 Wind SW. 
8 33 45 37 Wind SW.; at sunset NW., overcast. 
9 34 42 a7 
10 30 39 35 
11 33 35 30 
12 23 35 30 Cloudy; snowing a little. 
13 28 36 30 
14 15 28 26 Cloudy. 
15 22 26 25 
16 23 37 28 Cloudy. 
17 20 32 30 Cloudy; NW. wind in the morning. 
18 26 39 32 Cloudy; snowed a little in the morning. 
19 15 42 28 Cloudy. 
20 26 37 34 Snowing. 
21 29 41 34 Cloudy, 
22 24 42 38 
23 33 38 34 Some snow fell in the morning. 
24 | 25 51 33 
25 33 40 35 
26 32 42 35 Wind SW. 
27 35 47 41 Wind SW. 
28 31 46 45 
March 1 41 45 42 
2 33 45 gy | ceseseselslaecs2 Arrived at Wallah-Wallah. 
37. Report oF mR. TINKHAM OF THE SNOWS OF THE ROCKY MOUNTAINS IN NOVEMBER, OF THE 
BITTER ROOT IN DECEMBER, AND OF THE CASCADES IN JANUARY. 
Wasuineton, D. C., August 12, 1854. 
Str: As requested in your note of to-day, I give herewith, in brief, facts relating to snow as 
they were noticed in my recent exploration. 
In October, 1853, I left the valley of St. Mary’s river; passing to the eastward, and recrossing 
the Rocky mountains, was in the prairies at their eastern base from late in October to near the 
middle of November; crossed again the Rocky mountains about the middle of November; was 
