THERMOMETER, AND RAIN. 573 
TABLE OF THE MONTHLY MEAN HEIGHT OF THE THERMOMETER, AND ALSO 
THE ANNUAL MEAN FROM 1794 To 1840 INCLUSIVE. 
SAMA 5 js aise onic de MBs scanacsep wes 53.2 | September, ,...56.3 
February, ...... Ded | JUNG, co seccesnace 58.2 | October, ....... 50.0 
March, .......00- AVS Taly pe. ne 60.8 | November,.....42.9 
Bs ease nanan 47.1 | August, .........60.4 | December, ....39.0 
Annual Mean Temperature for 47 years, ......seseseeees 48.8 
The average Temperature of the year depends 
much on that of the winter months, which are so 
various in our climate. Itis remarkable, that the 
mean Temperature of January 1795, was 24°.3, 
and that of the same month the following year 
was 44°, and in 1834 it was 46°.6, making a dif- 
ference of the means in the same month to the 
amount of 22°.3. The corresponding differences 
in July do not exceed 10°. 
_ January is the coldest month of the year, as 
might be expected, and the Temperature gradu- 
ally increases with the approach of the Sun, till 
July, which is the warmest month of the year, but 
August is little inferior to it. After that the 
Temperature descends with greater rapidity than 
that of its ascent. 
April and October are the months which ap- 
proach nearest to the mean Temperature of the 
year, but the former is colder, and the latter 
warmer than the mean. 
