308 METEOROLOGY. 
Thus, in the winter of 1853— 54, an unusually cold one throughout the northern States and 
Territories, the climate at Fort Benton was 12? warmer than at Montreal, 14? warmer than at 
Quebec or Fort Snelling, 10° warmer than at Moscow, and T° warmer than at St. Petersburg. 
In the Bitter Root valley the difference was —0°.5 less, but in the following winter 4.99 
greater, which is no doubt nearer the mean winter climate. 
Comparing now the greatest cold observed, we find that in January, 1854, the coldest days 
at Fort Benton and Cantonment Stevens were from 6? to 8? milder than at Fort Snelling or 
Montreal, and the same fact would be undoubtedly true of the great Russian route, although 
records are not attainable, and from the great distance of the places might not be comparable 
for the same winters. 
Comparison of greatest cold observed. 
1854. 5 Other years. 
Locality. 
Date. Extreme cold. Date. Extreme cold, 
о о 
Cantonment Stevens....... January 19.244... --29 
Fort Owen February 20, 1855....... +1.50 
Fort Benton January 14.........-- —27 
Salt Lake City January 24. ........ --14 
Fort Laramie............. JARUNT 20222-22. —21 
Fort Tu ual lll. January 20 ......... —16 .. 
Fort Бие ме оша. os January FE --36 
Fort Garry December 24, 1855 ...... —48 
Montreal January 19......... udo odii 1822 —36 
Quebec Чапчу 20 а --29 
Albany . —10 January, 1840 .........- —23 
Boston атату 20. — 6 February 7, 1855......-.| 18 
Edmonton January, гаа —21 
Considering the subject now in another point of view, I take the number of cold days when 
the average temperature was below zero. It thus appears that there were more such days on 
the Grand Trunk line and the railroad lines in Minnesota than in the Rocky mountains. 
Number of winter days when the thermometer averaged below zero. 
Locality. 1853-54. Other winters and remarks. 
Cantonment Stevens...... 10 J А 
Fort Owen None іп 1854—' 55. 
Fut Benton. oo lu 12 Jan М 
Salt Lake City. 2 January 20 and 21. 
Fort Laramie. 
Fort Kearney 4 January. 
Fort Snelling 18 
Fort Garry ------------| 53 days in 1855—56. 
MUMIA TO OO ec els 18 
Секс 5,2 23 
АНЫ. SSS SO 
Boston 
----| February 6, 1855,--79.7. 
