Unsaponifiable matter, Constitution of, 119, 120 ---- ---- Determination of, 119 Unsaturated acids, 11 Utilisation of nigres, 56 V. Vanillin, 110 Vegetable oils, Treatment of, 43 ---- tallow, Chinese, 31 Verbena oil, 106 Vetivert oil, 106 Violet soap, 54 Volhard's method for chloride determination, 132 W. Waste fats, 30 Water, 39 ---- ---- in fats, Determination of, 120 ---- ---- in soap, Determination of, 133 Wheat oil, 36 Wild mango oil, 36 Wintergreen oil, 107 Wool scouring soaps, 92 Woollen dyer's soap, 92 Y. Ylang-ylang oil, 107 Z. Zinc oxide, Hydrolysis by, 22 ---- soap, 87 THE ABERDEEN UNIVERSITY PRESS LIMITED STEVENSON & HOWELL'S SPECIALITIES FOR Soapmakers & Wholesale Perfumers. ESSENTIAL OILS OF GUARANTEED PURITY. Almonds, Bay Leaves, Bergamot, Caraway, Cananga, Camomile, Cascarilla, Cassia, Cedar Wood, Cinnamon, Citronella, Cloves, Coriander, Eucalyptus Globulus, Fennel, Sweet, Geranium -- _Algerian_, _Bourbon_, _East Indian_, _French_, _Spanish_ & _Turkish_, Kuromoji, Lavender, Lemon, Lemon-Grass, Limes, Neroli, Myrbane, Orange Sweet & Bitter, Otto of Rose, Patchouli, Palmarosa, Pimento, Petit-Grain, Rosemary, Sandal Wood, Sage, Sassafras, Spearmint, Thyme, Wintergreen Ylang-Ylang., &c. TOILET SOAP PERFUMES FINEST QUALITY Almond, Bay Rum, Brown Windsor, Cologne, Florida, Frangipanni, Heliotrope, Hyacinth, Lilac, Lily of Valley, Oriental, Parisian, Walnut Leaf, Wood Violet, &c. ARTIFICIAL PERFUMES. Aubepine, Cuir de Russie, Coumarin, Crategine, Heliotropine, Lilac, Musk, Nerolin, Terpineol, Vanillin, Yara-Yara, &c. SOAP COLOURS, Dark Blue, Rose Pink, Indian Brown, Carbolic Pink & Red, Manchester Yellow. &c. &c. _SPECIALITY_:--RELIABLE CHLORPHYL. STANDARD WORKS SOUTHWARK ST. LONDON. S. E. GLASGOW OFFICE 128, HOPE ST.