286 



INDEX 



Pelt, preparation of, 16, 92, 139 

 Peroxides for bleaching, 246 

 Phlobaphenes, 33 

 Phosphate of lime, 223, 225, 273 

 Picking band butts, 90 

 Pickling foods, 275 



skins, 114 

 Pigskins, 92 

 Pine bark, 34 

 Plumping, 19, 44 

 Precipitation, 236 

 Predigested foods, 276 

 Preparation of pelt, 16, 92, 139 

 Press leach, 35 

 Principles of chrome tannage, 139 



clarification of gelatine, 234 



liming, 92 



vegetable tannage, 41 

 Procter, definition of leather, 27 



glucose chrome liquor, 152 



on gelatine swelling, 217 



on pickling, 115 

 Properties of chrome leather, 127 



gelatine and glue, 200 

 Protective colloid, 237 

 Proteins, classification, 3 



composition of, 1-3 



food, 274 



miscellaneous, 266, 279 



of dermis, 271 



of epidermis, 272 

 Puering, 94 



Purification of grease, 227 

 Putrid soaks, 18 

 Pyrogallol tans, 28 



QUALITIES of chrome leather, 127 



gelatine and glue, 200 

 Quebracho extract, 38 

 Quercus cegelops, 30 



robur, 34 

 Quick processes of evaporating, 248 



of tanning, etc., 194 



RABBIT skins, 221 



Raw material for gelatine, 220 



heavy leather, 7 



light leather, 92 

 Reds, 33 



Reduction bleaching of glue, 243 

 Refrigerator, 258 

 Roans, 117 

 Rockers, 46 

 Roller leather, 118 

 Rolling leather, 51 

 Round of pits, 19, 46 

 Rounding pelt, 22 



SALTED food proteins, 275 



hides, 12 

 Samming, 50 

 Satin leather, 76 

 Schultz chrome tannage, 128 

 Scouring, 51 

 Scudding, 22 

 Scutch, 271 

 Sealskins, 106 

 Seasoning, 97 

 Semi-chrome, 191 

 Sharp limes, 19 

 Shaving, 51 

 Shearlings, 114 

 Shedwork on gelatine, 257 



on leather, 50 



Sheepskins, 110, 163, 174, 181 

 Short processes, 47, 194 

 Silk, 280 

 Skins, 92 

 Skivers, 116 



Sludge from lime pits, 270 

 Smoked foods, 275 

 Soaking hides, 16 

 Soda, 18, 20 

 Sodium sulphide, 18, 20 

 Sole leather, 65 

 Sour tan liquors, 44 

 Split fleshes, 76, 181 



hides, 86 

 Splitting, 52 

 Staking, 155 

 Stocks, 18 

 Stoning, 51 



Stove drying, 105, 109, 125 

 Strap butts, 65 

 Striking leather, 51 

 Stuffing leather, 49, 53 

 Substance, interfibrillar, 24 

 Sulphide of arsenic, 20 



soda, 18, 20 



Sulphurous acid, 227, 243 

 Sumach, 31 



use in dyeing, 104, 117 



use in finishing, 62, 84 



use in tanning, 102 

 Suspenders, 46 

 Sweating, 113 

 Swelling of gelatine, 201-220 



of pelt, 19 

 Syntans, 188 

 Synthetic tanning materials, 187 



TANNAGE, alum, 174 

 bag, 103 

 bottle, 103 

 chrome, 127, 139 

 combination, 191 

 drum, 47 



