11 



Albuminoids — Milk Sugar — Chemical Composition of Cow's Milk — Influence of Food, Season 

 and Milking Time — Milk Products — Cream — Skimmed Milk — Butter — Butter-milk — Cheese — 

 Condensed Milk — Koumiss- -Milk Preservation. Analysis of Milk and Milk Products. — 

 Milk — Amount of Fat — Determination of Total Solids, Specific Gravity, Proteids, Milk Sugar 

 — Adulteration of Milk — Detection of Preservatives — Butter — Butter Colouring — Cheese — 

 Milk Standards. Various Products used in Agriculture. — Arsenious Oxide — Bleaching 

 Powder — Copper Salts — Disinfectants — Fungicides — Iron Sulphate — Mercuric Chloride — 

 Plant Poisons. Appendix. — Atomic Weights— Hydrometer Scales — Metric System — 

 Solubilities. Tropical Agriculture, etc. — Composition of Rain Water — Irrigation Water — 

 Earth Worms — Motion of Water in Soil — Analysis of Soils — Green Manuring — Kraal Manure 

 — Bats' Guano — Artificial Manures— The Plant— Rice— Maize— Millet— Cotton— Flax— Castor 

 Seeds — Sunflower — Composition of Various South African Grown Crops — Ash Constituents of 

 Foods — Variations in the Composition of Milk — Butter — Fat — Bordeaux Mixture — Insecticides. 



THE UTILISATION OF WASTE PRODUCTS. A Treatise 

 on the Rational Utilisation, Recovery and Treatment of Waste Pro- 

 ducts of all kinds. By Dr. Theodor Koller. Translated from the 

 Second Revised German Edition. Twenty-two Illustrations. Demy 

 8vo. 280 pp. Price 7s. 6d. net. (Post free, 7s. lOd. home ; Ss. 3d. 

 abroad.) 



CHEMICAL MANURES. Translated from the French of 

 J. Fritsch. Demy Svo. Illustrated. 340 pp. Price 10s. 6d. net. 

 (Post free, lis. home; lis. 6d. abroad.) [ynst published. 



Contents. 



Phosphoric Acid — Principal Phosphate Deposits — Drying and Enrichment of Phosphates 

 — His orical Review of Superphosphate Manufacture^ — Theory of Manufacture of Soluble 

 Phosphates — Manufacture of Superphosphate — Crushing, Sifting, Drying, and Storing of 

 Superphosphates — Compound Manures — Manufacture of Phosphoric Acid, Double Super- 

 phosphates, and Various Products — Manufacture of Bone Dust and of Bone Superphosphate 

 (Vitriolized Bones) — Manufacture of Basic Slag — Nitrogenous Manures — Manufacture of 

 Manure from Animal Waste — Recovery of Nitrogen from Distillery By-Products— Nitrogen- 

 ized Phosphate Manures — Potassic Manures — Transference and Handling of Raw Materials 

 and Finished Products. 



Writing Inks and Sealing Waxes* 



INK MANUFACTURE : Including Writing, Copying, Litho- 

 graphic, Marking, Stamping, and Laundry Inks. By Sigmund Lehner. 

 Three Illustrations. Crown Svo. 162 pp. Translated from the German 

 of the Fifth Edition. Price 5s. net. (Post free, 5s. 3d. home ; 5s. 6d. 

 abroad.) 



SEALING-WAXES, WAFERS AND OTHER ADHES- 

 IVES FOR THE HOUSEHOLD, OFFICE, WORK- 

 SHOP AND FACTORY. By H. C. Staxdage. Crown 

 Svo. 96 pp. Price 5s. net. (Post free, 5s. 3d. home; 5s. 4d. abroad.) 



Lead Ores and Compounds. 



LEAD AND ITS COMPOUNDS. By Thos. Lambert, 

 Technical and Consulting Chemist. Demy Svo. 226 pp. Forty Illus- 

 trations. Price 7s. 6d. net. (Post free, 7s. lOd. home ; 8s. 3d. abroad.) 



NOTES ON LEAD ORES : Their Distribution and Properties. 

 By Jas. Fairie, F.G.S. Crown Svo. 64 pages. Price Is. net. 

 (Post free, Is. 3d. home ; Is. 4d. abroad.) 



(White Lead and Zinc White Paints^ see p. 4.) 



