1887.] 



PUBLIC DOCUMENT— No. 33. 



125 



siderable severity. The latest damaging frost was on April 30, 

 and the last of the season occurred May 18, doing no material 

 harm. The season was, at the beginning of May, judging 

 from the state of the vegetation, at least two weeks in advance 

 of the general average year. 



The. following table gives the temperatures and rainfall, ar- 

 ranged in fortnightly periods, for the spring and fall months : — 



The first frost of the fall occurred September 2 ; but little 

 damage was done. Other light frosts followed September 14, 

 21 and 22. The first killing frost came October 3 ; on the 17th 

 the ground was frozen to the depth of one inch, and the 

 minimum thermometer registered 17° F. The first snow of 

 the winter of 1886 and 1887 came November 13, amountinof to 

 one inch ; during December there was a fall of 16 inches, 

 making a total of 40.5 inches for the entire year. 



The prevailing direction of the wind, as taken from the 

 monthly summaries, gives 29.2 per cent, from the northwest, 

 33.3 per cent, from the south, 20.9 per cent, from the north, 8.3 

 per cent, from the southwest, and 8.3 per cent, from the west. 



Rain or snow fell in measurable quantities on 122 days. The 

 greatest number of such days in any one month was sixteen, in 

 December, and the fewest was six, in April. 



The "clear" days, i. e., those on which the sky was less 

 than four-tenths overcast at each observation, numbered 104, of 

 which July had the greatest, thirteen ; and April the fewest, four. 



