Introductory. 3 



Celsius, although often given as such. More inclusive and 

 complete tables may be found in the " Practical Plant Physi- 

 ology." 



LENGTH. 



I millimeter (mm.) = ^^'^y-g- meter = j^j- inch (,03937 

 inch). 



I centimeter (cm.) = ^^ meter = \ inch (.3937 inch), '^^/f 



I decimeter = J^ meter = 4 inches (3.937 inches). 



I meter (M.) = 1000 miUimeters == 39.37 inches. . j 



I inch = 25 rrim. (25.399 nim.). 



I foot = 305 mm. = 30j5 cm. (30. 479 cm.). ' U 



I yard = .914 m. = 914 cm. (914.399 cm.). 



I milligram (mg.) = -^-^ gram = .01543 grain Troy or 

 Avoir. 



I gram =15.5 grains = -^-^ oz. Avoir. 



I kilogram 4- 1000 grams = 32.157 oz. Troy = 35.274 oz. 

 Avoir. 



I oz. Troy = 31-103 grams. 



I oz. Avoir. = 28.35 grams. 



I lb. Avoir. =453.59 grams. 



I lb. Troy = 363.236 grams. 



CAPACITY. 



I cubic centimeter (cc.) = yuVo l''er = i gram of water = 

 .034 fluid oz. 



I hter = 1000 cc. = 1000 grams of water = 1.057 quarts = 

 33.8 fluid oz, 



I pint U. S. = 437.18 cc. 



I quart = 946.36 cc. = .946 hter. 



I gallon = 3.718 liters. 



