AT SANTIAGO DE CHILE. 



399 



In preparing Table XXXVIII, as observations were made only on 45 days of 1849 and 256 

 days of 1852, a, proportional number was added to the sum of the numbers in the columns oppo- 

 site each hour (except 3 A. M.) for the 34 months, to complete 36 months, and } of the sum thus 

 found is placed opposite in column means. 



To render the annual means of each year comparable, the sums of the numbers for each direc- 

 tion in column 1849 (except for 3 A. M.) were multiplied by 8, the products divided by 7, and 

 the resulting quotients are placed in lines annual means. So also the sums of the corresponding 

 numbers, in column 1852, were increased by fa of each, the resulting numbers divided by 7, 

 and the quotients placed in lines means. 



TABLE XXXVIII. 



Showing, at each observation hour in the several years, the number of winds prevailing frvm each 



direction, and the annual means of the same. 



