ry 28, 1907 — 
Observatory, together with some personal experience on 
veral trips taken during the spring and summer months. It 
appens that the most complete records of temperature taken 
the mountain top represent an unusually mild season, so the 
ollowing figures may be somewhat misleading, if we were to 
compare them with the present winter, which has been an ex- 
ceptionally cold one, the thermometer readings in the valley 
being usually below zero every night for several weeks. 
Continuous records were obtained at the mountain observa- 
tory by weekly visits from October 14th to November 29; 1905; 
During the six weeks the mean daily range was only 13.8 de- 
grees, while that at Reno for the corresponding period was 31.3 
degrees. From December 3d to the 11th the mean range was 
9.4 degrees; from January 22d tothe 30th 7.8 degrees; February 
5th to the 13th, and 19th to the 23d, 8.7 degrees; while the cor- 
responding mean ranges at Reno were 27, 21.6, and 23.4 degtees 
respectively. During the months of March and April the rela- 
tion remained approximately the same, the mean daily range on 
Mount Rose from March sth to 12th and 19th to 27th beimg 
g.8 degrees, and from April 8th to 16th and 24th to 3oth 10.2 
degrees, as against 25.6 and 24.9 degrees respectively at Reno. 
MINIMUM AND MAXIMUM TEMPERATURES 
Period Minimum °F. Maximum °F. 
ae 
June 29-August 4, 1905 plus 24 71-2 
August 4-September 4, 1905 minus 2 70.8 
September 4-October 7, 1905 minus 4.5 65.5 
October 14-October 30, 1905 plus 7 46 
October 30-December 3, 1905 minus 1.8 52 
December 3-January 30, 1906 minus 5 48 
January 30-March 4, 1906 plus 9 36 
March 4-March 18, 1906 plus 3 44 
March 18-April 7, 1906 minus 2.5 30 
April 7-May 5, 1906 plus 11 44.3 
May 5-May 31, 1906 plus 7 49.5 
May 31-June 16, 1906 plus ro 45 
June 16-June 25, 1906 plus 30 58 
June 25-July 14, 1906 plus 22 71 
