SOCIETY. 



93 



score of years, six hot days came in March, twelve in April, 

 ten in May, fourteen each in June and July, eleven in August, 

 forty-one in September, twenty-seven in October, and one in 

 November. The average number of hot days is a fraction 

 over two for September, which lias more than any other month. 

 A singular alteration appears between the six years from 1852 

 to 1857, inclusive, as compared with the next six from 1858 

 to 1863, inclusive. In the former period, the number of hot 

 days in a year was never less than eleven, and the average 

 was thirteen ; while in the latter the highest was seven, and 

 the average was less than three. 



The following table shows the number of hot days in San 

 Francisco, when the thermometer reached 80, for every month 

 between March and November, inclusive, in twenty years. 



The number of hot days increases rapidly as we go inland 

 and get away from the influence of the ocean winds. 



