108 DAIRY LABORATORY GUIDE 



Make eulactol by dissolving proteic vegetable sub- 

 stance and adding hydrates of carbon, salts, such as 

 phosphate of calcium, cooking salt, or carbonate of 

 sodium, and allow to vaporize. 



Obtain albumine "nikol" from sterilized whey and 

 dissolve precipitate in soda and render soluble by 

 treating successively with HCl and alkali. 



Mix albumine "nikol" with oxblood 10 to 2. 

 This mixture is a hygiene albumen frequently used 

 by people suffering from chlorosis. 



EXERCISE XXX 

 Solid Milk 



Prepare solid milk by adding to any desirable 

 quantity of whole or skim milk 1 per cent of liquid 

 gelatine. Put up in any desired form, and allow to 

 sohdify at 30 to 50° F. 



Soap 



Boil 1 pound of milk with any alkali and note 

 difference in per cent of fat before and after adding. 

 12.5 per cent of glycerine unites with 87.5 per cent 

 of fatty acid to form fats. When fat is boiled with 

 alkali the latter takes the place of glycerine and 

 forms soap. When boiled again with an acid the 

 fat returns to its original condition. 



