i8o ANIMAL PROTEINS 



fibres. After further drying they are coated with the tanning 

 paste, which consists essentially of soft fats and flour to 

 produce partial emulsification. Equal parts of soft fats 

 and of flour may be used, to which may be added smaller 

 proportions of degas, cod oil, mutton tallow, salt, together 

 with about 25 per cent, water. The goods are coated with 

 this mixture, drummed, and dried further, and this routine 

 repeated as often as necessary to fill the interstices thoroughly 

 with fat. The temperature in the drum may reach 95 F. 

 In finishing an attempt is made to stuff further with grease. 

 The goods are thoroughly set out, dried a little, and coated 

 again, flesh and grain, with a mixture of tallow, cod oil, 

 glycerine and degras, and dried further. The excess grease 

 is slicked off and the goods again set out and grained. They 

 are then dried out. 



REFERENCES. 



Bennett, " Manufacture of Leather," pp. 245, 246 and 376. 

 Procter, " Principles of Leather Manufacture," p. 378. 



