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, 191 1, 

 1 86: 



