SECRETARY'S REPORT. 



77 



don for each of the several months during the ten years, 

 1807—1816, and during the period between 1817 and 1823:— 



1807—1816 



January, 



February, 



March, 



April, 



May, 



June, 



July, 



August, 



14.4 

 15.8 

 12.7 

 14.0 

 15.8 

 11.8 

 16.1 

 16.3 



September, 12.3 

 October, 16.2 

 November, 15.0 

 December, 17.7 = 



178.1 



September, 13.0 

 October, 16.1 

 November, 16.0 

 December, 15.4 

 Average per month, 14.6 



But the average number of days per month on which some 

 rain or snow fell at Salem, near Boston, during the same years, 

 (1807 — 1823,) was as follows, including even the slightest 

 showers : — 



Or, to take a longer term of years, and, therefore, a more 

 accurate standard of comparison, we have the average number 

 of days on which some rain or snow fell at Salem, from 1786 

 to 1828, as follows:— 



January, 10.1 days. 

 February, 9.5 " 

 March, 9.7 " 



April, 9.2 " 



July, 8.8 days. 



August, 9.2 « 

 September, 7.9 " 

 October, 7.8 « 



