396 APPENDIX. 



Commercial weights and measures of the U S. A. 



1 pound avoirdupois = 16 ounces. 



1 ounce = 437.5 grains. 



1 gallon = 231 cubic inches. 



1 gallon = 4 quarts = 8 pints. 



1 pint of water weighs 7291.2 grains at a temperature of 15.6 



Troy weight. 



1 drachm = 60 grains. 



1 ounce = 8 drachms = 480 grains. 



