Palas kino, 33 Pale catechu, 29-31 Panniculus adiposus, 15 Pars papillaris, 2 ---- reticularis, 2 Patent leather, 203-5 Pay-pay pods, 55 Permanganate process for analysing tannins, 128-31 Persea bark, 55 Phlobaphenes, 72 ----, decomposition by fusion with caustic alkali, 73-5 Phloroglucin, 74 Phloroglucol, 74 Phyllocladus bark, 55 Pipes, heating effect of, 250 Pipettes, 92 Pits, construction, 238-40 Plan of tannery, 232-6 Plumping hide, influence of water on, 85 Pokako tannin, 54 Polygonum leaves, 55 Pomegranate tannin, 55 Preller's leather, 213-7 Preparation of tannins, 58 Preparing hides for sole leather, 132-8 Preparing hides for tanning, 133-8 ---- standard solutions, 95-7 Preserving osmic acid solution, 15 Price of microscope, 10 Priestman's striking machine, 180 Prosopis pods, 23 Protocatechuic acid, 75 Pterocarpus kinos, 33, 34 Pumps for tannery, 241 Punica tannin, 55 Pures for dressing leather, 184-6 Purification of tannins, 58 Putz's patent filling, 22 Pyrocatechin, 67 Pyrocatechol, 67 Pyrogallic acid, 66 Pyrogallol, 66 Quebrachia wood, 40 Quebrachitannic acid, 82 Quebracho, 39 ---- catechin, 81 Quercitannic acid, 78 Quercus acorn cups, 50-3 ---- barks, 38 Reagents for analysing tannins, 120-3 Rete malpighi, 2 Retenage, 194 Rhabdisto valonia, 52 Rhizophora bark, 55 Rhus galls, 28 ---- leaves, 40-50 Roble Colorado bark, 56 Rocker, 169 Rounding hides, 155 Rove galls, 28 Russia leather, 208