Nine Inch Conical Rain Gage. 321 
Art. X.—Description of the Nine Inch Conical Rain Gage; by 
S. DeWirrt. 
Read before the Albany Institute, May 3, sez 
DeWitt’s Nine Inch Conical Rain Gage, with the Scal ted 
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Above 8 tenths of an inch, the scale is graduated to half tenths. The intermedi- 
ate fractions may be measured with sufficient accuracy by the eye. 
Tue contents of a cone nine inches high are equal to the contents of 
acylinder three inches high, having its diameter equal to that of thebase 
