AVEIGHTS AND MEASURES. 



xU 



The imperial gallon, lately added to the others in use, is established 

 by the weight of distilled water it will hold at 62 deg. Fahr., the baro- 

 meter standing at 30 inches. 



The gallon is to hold 10 Avoird. pounds of water, and must conse- 

 quently measure 277 cubic inches .274. 



The pint is to hold 20 Avoird. ounces, and should of course measure 



1 cubic inches .659. 



The Avoird. ounce measure of water is therefore 1 cubic inch 

 73298. 



The Troy ounce of water measures 1 cubic inch .9013214. 



The weight of a cubic inch of water is 252 grains .456 ; and that of 

 a cubic foot is 62 Avoirdupois pounds .3206. 



A cubic foot of air, or 1728 cubic inches, weighs 528 Troy grains 

 '67, or 1 Avoird. oz., 3 dr., 8 grains .23. 



Besides these measures, other irregular measures of uncertain con- 

 tent, are used : — 



A table spoonful, cochlearium magnum, of syrop 5SS. 



of distilled waters Siijss to 3ss 



of spirits and tinctures 3ij to 5iij. 

 A desert spoonful, cochlearium mediocre, of water 3ij. 

 A tea or coffee sjxwnful, cochlearitan parvum, of syrop 3j to 5ij.'" 



of distilled waters 3jss to 3ij 



of spirit and tinctures 3j to 3jss 



of a light powder, as magnesia, 3ss to 3J 



of a heavy powder, as sulphur, 3jss to 3ij 



of a metallic oxide 3j to 3iiij. 

 A thimbleful, clypcola mctallica pro digitis, is usually the same as 

 tea spoonful. 



A tea-cup, vasculum pro thea, 3iij to ^iv. 

 A wine-glass, scyphus pro vino, cyathusj Jjss. 



FRENCH MEASURES. ^ 



In the Codex the liquids are used by weight, and the chemists do 

 the same; so that it is only in common affairs that measures are 

 employed. 



Old French English 



MMtore. Cubic Inches. 



LIQUID MEASURE. 



Poisson . . 3.631 

 Pinte . . 58.110 



DRY MEASURE. 



Li iron . 

 Boisseau . 



Minot 



MllM- 



Muid 



Mine, cluir. 

 Voie, fire w. 



49.617 

 793.a56 



Cabic Feet. 

 1.378 

 2.756 



5.512 

 66. J 46 



7.350 

 6;y489 



