220 



TRANSACTIONS OF THE 



YEARLY AND SEASONAL RAINFALL, ETC. 



The instructive tabulated information below gives the rainfall 

 annually — that is, from January to December of each year — for thirty- 

 two years. Also, the rainfall by seasons, beginning with September 

 1st of one year and ending with August 31st of the next year, the 

 wettest season being 1861-2 — 35.56 inches; the driest that of 1863-4— 

 7.86 inches; the wettest calendar year being 1880 — 31.99 inches; the 

 driest being 1877 — 8.43 inches; the mean average seasonal rainfall 

 for thirty-one years being 19.143 inches; the mean average for the 

 year, or the mean annual average, being 19.480 inches. The differ- 

 ence between the mean average rainfall, calculating from January 

 1st to December 31st of each year, and from September 1st of one 

 year to August 31st of next year, is only .337 of an inch in favor of 

 the calendar year: 



* Mean for thirtj'-two years. 

 f Mean for thirty-one seasons. 



