VALUE OF WEIGHTS AOTD MEASURES 



ACCORDING TO THE METRIC SYSTEM, EMPLOYED IN THIS BOOK. 



One gramme = 15.434 grains. 



One kilogramme (1000 grammes) = 2.2 pounds Avoirdupois. 



One micromillimetre . . . . = 0.00004 ( 23 ^ 0o ) inch. 



One millimetre = 0.0394 



One centimetre =0.394 



One cubic centimetre ....== 0.061 cubic inch. 



One litre (1000 c. c.) .... = 61 cubic inches (0.035 cubic foot). 



