DAIRYING 177 



and expensive matter to separate this sugar 

 from the different constituents of the whey, 

 but now that there are various methods of 

 doing so, the manufacture of this sugar is 

 carried on on quite a considerable scale. It 

 is the most digestible form of sugar, not so 

 sweet as the ordinary cane and beet sugars, 

 and largely used in the preparation of invalids' 

 and infants' foods. 



Skim-milk cheese. --The best known example skim-milk 



cheese 



of this is the cheese made in Dorset from 

 skim or separated milk, called " Dorset Blue." 

 It is a very favourite commodity in its own 

 locality. It belongs to the class of blue 

 veined cheese, and ripens very much like a 

 Stilton. It is usually sold at about 4d. a Ib. 



Dried casein. In some dairies, instead of Dried casein 

 using the skim or separated milk for feeding, 

 the casein is extracted from it, and sold in the 

 form of a fine white powder. 



Process. The milk is treated with acids, 

 which precipitate the casein, after which the 

 whey is drawn off and the curd washed with 



VI. M 



