Keratins, 4 of epidermis, 272 Kestner evaporator, 249 Kid skins, 163, 174 Kips, 8, 76, 159 Lactic acid, 23 Lambskins, 110, 163, 174 Larch bark extract, 41 Layaways, 47 Layer, hyaline or glassy, 272 Layers, 47 Leaching, 35 Leather, definition of, 27 Legging leather, 76 Levant grain, 109 Lime, function of, in depilation, 20 Liming for chrome leather, 127 glue pieces, 220 hides, 18 leather, 83 skins, 92 Liquor, chrome 127, 129, 143-153 lime, 18-22 tan, 35 Logwood, 75, 83, 109 Lyophile colloids, 201 Lyophobe colloids, 201 Lyotrope series colloids, 206-209 Machine fleshing, 23 scudding, 23 shaving, 52, 82 Mallet bark, 34 Mangrove bark extract, 41 Mean temperature difference, 252 Meat extracts, 275 Mellow lime liquors, 18-21 tan liquors, 44 Memel butts, 83 Milk, 276 Mimosa bark, 33 Miscellaneous proteins, 266, 279 tannages, 174 Mixed tannage of sole leather, 55 Mordants, 96 Morocco leather, calf, 120 goat, 99 seal, 106 sheep, 110 Motor butts, 170 Multiple-effect evaporation, 249 Myrabolans, 30 Nature of chrome leather, 127 of leather, 27 Nett adsorption, 215 Neutralization, 153 Nitrogen in proteins, 1 value of manures, 280 Noses, 268 Oak bark, 34 Oakwood extract, 37 Offal for sole leather, 63 Oil tannage, 181 One-bath chrome tannage, 149 One-pit system of liming, 19 Open-vat system of extraction, 231 Oxidation method of bleaching, 245 Paddles for washing, puering, dyeing, and tanning, 17, 94, 96, 103 Parker, on valonia, 31 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 ægilops_, 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