MILK PRODUCTS 65 



to indigestion and diarrhea and not infrequently causes the death of 

 Jersey calves living on their mother's milk. 



Bye-Products 



In speaking of milk products the bye-products of milk are 

 tised to an extent in the arts but little appreciated. This has re- 

 cently been brought out in an address at Chicago by Dr. Xowak, the 

 inventor of a process for using skim milk in the tanning of leather. 

 The curd or casein of skim milk is the essential part of the milk 

 employed for the following manufactures : 



For sizing straw and felt hats ; for making and glazing paper ; 

 for glazing and finishing leather; finishing and sizing silk, cotton, 

 woolen and linen goods; for making wall paper, roofing paper and 

 linoleum. Also, casein is an important ingredient of cements, glues, 

 putty, woodfillers, paints (especially dry paints), imitation ivory for 

 balls, and buttons, etc. 



Some of the most lasting of the old Roman structures were 

 made from a mixture of milk, lime and sand, and the most cele- 

 brated old mural decorations of Europe from casein mixed with 

 color. 



