1900.] 



PUBLIC DOCUMENT — No. 33. 



95 



Greatest in twenty-foi;r hours, July 12-13, 1897, . . . 5.650 



Greatest in one hour, July 30, 1898, 1.500 



Unusual rains : 1889, June 15, 2. 10 inches in lour hours ; 1896, 

 July 7, 1.10 inches in thirty minutes; 1897, June 9, 4.08 

 inches in twenty hours ; July 13-14, 8 inches in forty-four 

 hours ; 1898, July 30, 2.65 inches in two hours ; September 

 10, .95 inch in twenty minutes. Number of days on which 

 .01 inch or more rain or melted snow fell, .... 1,241.000 



Wi7id (in Miles) 

 Total movement, .... 



Greatest annual movement, 1896, 



Least annual movement, 1894, . 



Mean annual movement, ... 



Greatest monthly movement, March, 1896, 



Least monthly movement, July, 1894, 



Mean monthly movement, . 



Greatest dail}^ movement, Nov. 27, 1898, 



Least daily movement, Sept. 29, 1894, and March 7, 1895, 



Mean daily movement, ....... 



Maximum pressure per square foot, 43 pounds, = 93 inches 

 per hour, Sept. 11, 1895, 3 p.m. 



515,638 



59,198 



36,257 



51,566 



8,182 



1,109 



4,297 



675 



141 



Weather. 

 Mean cloudiness observed, . 

 Total cloudiness by the sun thermometer, 

 Number hours bright sunshine recorded, 

 Number of clear days, . . . . 

 Number of fair days, .... 

 Number of cloudy days, 



52.40 per cent. 



22,400 = 50.30 per cent. 



22,120 = 49.70 per cent. 

 1,143 

 1,066 

 1,444 



Gales of 75 or more miles per hour: 1889, Dec. 26, 76, N.W. ; 1893, 

 Aug. 29, 87, S.W. ; 1895, Sept. 11, 93, N.E. ; 1898, Sept. 7, 78, S.W. ; Dec. 

 4, 75, E.S.E. 



