144 



REPORT 1867. 



Table XXXII. — Showing the Mean Extent of Cloud, in each Month and 

 Year, from 1860 to 1866, both inclusive, 10 being taken for an entirely 

 overcast sky, and for an entirely cloudless sky. 



Months. 



1860. 



January 



February . . . . 



March 



April 



May , . . . . 



June , 



July 



August 



September . . . , 



October 



November .... 

 December ... 



Yearly means 



6-0 

 6-7 

 4-6 



4'4 



4-9 

 4-6 



5'9 

 4-6 



4-9 

 5-8 

 4-8 



57 



1861. ; 1862. 



5-8 

 6-9 



5'3 

 5-0 



5'i 

 4-2 



41 

 4-3 

 3-9 



VI 

 4-z 



4-5 



5"3 

 5'3 

 4-5 

 3'4 

 3 "9 



2'8 



3*5 

 4-2 



3-8 



57 

 42 



37 



1866. 



Monthly 

 means. 



6-1 



5"i 

 47 

 5-6 

 49 

 4'5 

 4-2 

 4-8 



4-9 

 6-3 



4-2 



4-9 



5'4 

 5-9 

 4*9 

 4-5 

 4" 3 

 4-0 



4-3 

 4*9 

 4*3 

 5'i 

 4"3 

 5-1 



5'2 



4-8 



42 



5"° 



47 



Table XXXIII. — Showing the Amount of Rainfall, in inches, for each 

 Mouth and Tear, from 1860 to 1866, both inclusive. 



The rain-gauge is 40 feet above the ground ; the mouth of the receiver is 

 20 by 10 inches ; and the rain is conducted by a leaden tube to a room in 

 the Observatory. 



