100 THE PHYSICAL PROPERTIES OF SOILS 



TABLE OF DATA 



I cc. of water := i gram. 



I cu. ft. of water = 62.25 ^bs. avoirdupois. 



I gram = 0.0022 lbs. avoirdupois. 



I cc. = 0.061 cu. in. 



I gal. = 231 cu. in. 



I oz. avoirdupois = 28.35 grams. 



I kilogram = 2.20 lbs. avoirdupois. 



I inch = 25.4 mm. 



