54 ANIMAL PROTEINS 



stand this temperature, so that it is first necessary to make 

 the leather absolutely dry. This is effected by drying in 

 stoves at temperatures up to iio-ii5 F. There are two 

 ways in which the grease is applied. In one method the 

 melted grease is poured by a ladle on to the flesh side and 

 brushed over until evenly distributed. A second applica- 

 tion of grease is made to the thicker parts. The hides are 

 then put into warm water (120 F.) for about a quarter of 

 an hour, and then drummed for half an hour. In the other 

 method the goods are completely immersed in the melted 

 fats for~a few minutes in a steam- jacketer tank at a tempera- 

 ture of 195 F. After softening in water at 120 F. the 

 goods are drummed. " Burning in " is used for the heavier 

 dressing leathers such as belting and harness. It does not 

 give good colour, but permits the employment of still more 

 hard fats. 



REFERENCES. 



Procter, "Principles of Leather Manufacture," pp. 223, 378. 

 Bennett, "Manufacture of Leather," pp. 251-312. 

 Bennett, " Principles of Leather Stuffing," Leather Trades Review, 1911, 

 186: 



