26 3 



• The quicksilver in the bason of the barometer, is 81 feet above the level of low water 

 spring tides at Somerset-house. 



f The Society's Rain Gage is 114 feet above the same level, and 75 feet 6 inches above 

 the surrounding ground. 



By another Rain Gage placed 1 1 feet 6 inches lower, the quantity of rain appears to have 

 been 22,03 inches. 



Variation of the Magnetic Needle, October, 1812, 24"* 16' 30" West. 



