METEOROLOGY. 309 
The next table, showing the number of cold days during three winter months, when the 
thermometer averaged above the freezing point, is still more favorable, showing that the number 
was even greater at Cantonment Stevens than at Albany or Boston, while far more than at the 
Canadian stations. 
Number of days in three winter months when the thermometer averaged above 32°. 
Locality. 1853-'54. Other winters and remarks. 
Cantonment Stevens 32 
Fort Owen 46 in 1854-55. 
Fort Benton 43 
Salt Lake City 2.» 
Fort Laramie .... 51 
Fort Kearney 47 
Fort Snelling .......- 6 
Fort Garry None іп 1855~'56, 
Montreal 8 
Quebec 5 
Albany 18 
Boston | 81 
But it may be objected that the temperature of Fort Benton and Cantonment Stevens is not 
the measure of the temperature of the intermediate rocky range through which the route 
passes, and which is much more elevated. Fortunately, the party of Lieutenant Grover made 
observations of temperature on the route, and it has been found by careful comparisons that 
the party made the passage during the extreme cold weather of that winter, so that the tempera- 
ture then observed gives the extreme cold of the pass, and not the usual cold. Б тегу 
intelligent young man who accompanied Lieutenant Grover to Fort Benton генно imme- 
diately, and found the weather very mild and pleasant in the pass, corresponding to the 
observed temperatures at Fort Benton and Cantonment Stevens. | 
The following tables show the temperatures as observed by Lieutenant Grover in the раве, 
and at the stations on each side of it, during eleven of the coldest days in January, 1854, with 
а comparison of these with the corresponding coldest days at other points. 
