Cachou, 23-5 ---- jaune, 29-31 Cæsalpinia pods, 25, 54 Calf kid, 223 ---- skins, 256 Camata valonia, 52 Camatina valonia, 52 Cascalote tannin, 54 Castanea extract, 23 Catechin, 79-81 Catechol, 67 Catechu, 23-5 Catechutannic acid, 81 Cellular structure of hide, examining, 12 Chagrin, 258 Chamada valonia, 52 Chamois leather, 210-2 Charcala valonia, 52 Chemical composition of hide, 17-22 Chemistry of tannins, 57-82 Chestnut extract, 23 ---- ---- for sole leather, 158 Chinese galls, 28 Chlorine in water, estimating, 98 Chromic and osmic acids for hardening and staining hide sections, 14 Churco bark, 55 Cleaning drains in tannery, 240 Climax scourer, 200 Commerce, 255-71 Commercial tanning materials, 23-56 Composition, chemical, of hide, 17-22 Comptonia tannin, 54 Condense-water trap, 251 Connective tissue, 7 ---- ----, nature of, 18 Constitution of tannins, 76-82 Construction of tanneries, 231-42 Conveyors for bark, 162 Coriaria tannin, 54 Coriin, 19 ---- in lime-liquors, determining, 104 Corium, 2, 7 Cork-tree bark, 38 Cover-glasses, 11 ----, screwing objective down on, 11 Cow skins, 261 Crown leather, 213-7 Crust roans, 206 Curried leather, measuring, 202 Currying, 193-202 ---- crown leather, 217 ---- defined, 1 Cutch, 23-5 ----, commerce, 271 Cutting hide-sections, 12-5 Cynips punctures, 26 Decomposition of phlobaphenes by fusion with caustic alkali, 73-5 ---- ---- tannins by acids, 68-73 ---- ---- ---- by heat, 65 ---- ---- ----, products of, 65-8 Deer skins, 256 Dégras, 211 Depilatories, various, 150 Derma, 2 Dhak kino, 33 Diffuseur for exhausting tan, 167 Digallic acid, 76-8 Dioxysalicylic acid, 69-71 Diplolepis punctures, 26 Disintegrators, 158-61 Dissolving extracts, 168 Dividing hides, 155 Divi-divi, 25 ---- ---- for sole leather, 157 Dog skins, 256 Drainage of tanyard, 231 Drains from latches and pits, 240 Dressed leather, commerce, 265 ---- skins, commerce, 263 Dressing leather, 184-92 Dry raw hides, commerce, 264 Drying, principles, 248-54 ---- -sheds, 243-54 ---- sole leather, 183 Dugong skins, 256 Dyeing calf kid, 224 ---- chamois leather, 212 ---- glove kid, 229