INDEX 



287 



Tannage, fat, 178 



formalin, 185 



oil, 181 



with synthetic materials, 187 



of bag leather, 86 



of bridle leather, 71 



of belting leather, 65 



of harness leather, 71 



of bookbinding leather, 99, 

 110, 120 



of morocco leather, 99, 106, 110, 

 120 



of picking band leather, 90 



of sole leather, 55 



of upper leather, 76 



of roller leather, 118 

 Tannage, chrome, of calf, 156 



of goat and sheep, 163 



of hides, 170 



Tannage, vegetable, heavy hides, 

 55-90 



skins, 92-123 

 Tanning, theory of, 41 



chrome, theory of, 129 

 Tannins, catechol, 32 



classification of, 28 



properties of, 27 



pyrogallol, 28 

 Three-paddle system of tanning 



skins, 103 



Three-pit system of liming, 19 

 Tissue, adipose, 271 

 Two-bath chrome tannage, 142 



UDDERS, 220 



Unhairing, 22, 23 



Upper leather, 76, 115, 120, 123 



VACUUM on condenser, 250 



pan, 248 



Valency rule, 131, 236 

 Valonia, 30 



Vatting sole leather, 62 

 Vegetable tannage, 41 



of hides, 55-90 



skins, 92-123 



tanning materials, 28 

 Velocity effect on heat transference, 

 253 



WAR, effect on methods, 194, 265 

 on supplies, 11-13, 33, 277 



Warble fly, 10 



Waste leather, 270 



Wattle or mimosa bark, 33 



Waxed leathers, 76-86 



Weather drying, 49 



Willow bark, 32 

 calf, 156 



Wood, J. T., action of puer, 94 



Wool, 110, 269 



YAR-YAN evaporator, 249 



ZONES of compressed water, 202-205 



