ARITHMETIC OF MILK AND MILK PRODUCTS 273 



28. FINDING SPECIFIC GRAVITY OF 

 MILK-SOLIDS 



Rule. To find the specific gravity of milk-solids, 

 when the specific gravity of the milk and per cent, of 

 milk-solids are known, multiply the specific gravity of 

 the milk by 100, from the result subtract 100 and di- 

 vide this result by the specific gravity of the milk. Sub- 

 tract the last result from the per cent, of milk-solids 

 and then divide this result by the per cent, of milk- 

 solids. (See p. 187). 



29. FINDING AMOUNT OF ADDED WATER 



IN MILK 

 See page 201. 



30. TABLE SHOWING APPROXIMATE EQUIVA- 

 LENTS OF METRIC SYSTEM 



1 fluid ounce 29.60 cubic centimeters (cc.) 



1 quart = 0.95 liter (1) 



1 gallon 3.8 liters. 



1 grain = 65. miligrams (mg.) 



1 ounce (av.) = 28.35 grams (gm.) 



1 pound = .45 kilogram (kg.) 



