TRACTS ON VARIOUS SUBJECTS, &c. 



95 



Abstract of the fall of Rain at Plantation-house, from 22d Feb. 



1811, to 2lst Feb. 1812. 



9:6 



Inches 22 : 4 Total fall of rain during 12 months. 

 This is less than it actually was — because evaporation is very 

 considerable here — and no allowance is made for what unavoid- 

 ably took place upon an open surface, 9 inches in diameter. Being 

 now provided with proper apparatus, which receives the rain 

 through a small tube into a bottle, the present year's measure- 

 ment will be far more accurate. I consider, that if evaporation 

 had been prevented, the last year's measurement (even in what 

 was reckoned a dry year) would have been about 24 inches — 

 instead of 22 : 4. 



24;/t Feb. 1812. 



