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.) = ^Vo- meter = -fa inch (.03937 

 inch). 



i centimeter (cm.) = y^- meter = f inch (.3937 inch). 



i decimeter = ^ meter = 4 inches (3.937 inches). 



i meter (M.) = 1000 millimeters 39.37 inches. 



i inch = 25 mm. (25.399 nim.). 



i foot = 305 mm. = 30.5 cm. (30. 479 cm.). 



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



WEIGHT. 



i milligram (mg.) = VnW gram = .01543 grain Troy or 

 Avoir. 



i gram =15.5 grains = -fa oz. Avoir. 



i kilogram + 1000 grams = 32.157 oz. Troy = 35.274 oz. 

 Avoir. 



i oz. Troy = 31.103 grams. 



i oz. Avoir. = 28.35 grams. 



i Ib. Avoir. =453-59 grams. 



i Ib. Troy = 363.236 grams. 



CAPACITY. 



i cubic centimeter (cc.) = y^W liter = i gram of water = 

 .034 fluid oz. 



i liter = 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 liter. 



i gallon = 3.718 liters. 



