CONTENTS.—Introductory. Air. Water. Sewage, etc. Milk and Cream. Butter and Margarine. Lard. Carbohydrates. Proprietary Foods. Rice. Alcoholic Liquors. Baking Powders. Tea, Coffee, etc. Metallic Poisons in Food-Stuffs. Disinfectants. Soap. Rag Flock. Appendix. Index.
_Colour and Its Applications._ =M. Luckiesh=, Physicist, Nela Research Laboratory, National Lamp Works of General Electric Co. 129 Illustrations, including 4 Plates in Colour. 18/- net.
_Light and Shade and Their Applications._ =M. Luckiesh.= Medium 8vo. 280 pages. 135 Illustrations and Tables. 15/- net.
_Natural Rock Asphalts and Bitumens._ Their Geology, History, Properties and Industrial Application. =Arthur Danby=, Chemist and Public Consultant on Rock Asphalt and Bitumen. Crown 8vo. 244 + ix pages. 8/6 net.
CONTENTS.—Nomenclature and Definitions. Geology of Bitumen and Rock Asphalt. Appearance and Physical Structure. History and Ancient Use. Modern Exploitation of Rock Asphalt. Sources of Rock Asphalt and Bitumen. American Deposits of Bitumen. Extraction and Preparation of Rock Asphalt. Tests and Analyses. Physical Properties of Rock Asphalt. The Carrying Out of Rock Asphalt Work, and of Rock Asphalt Mastic Work. Macadam Roads. Other Uses of Bitumen.
_Water, its Purification and Use in the Industries._ =W. W. Christie, M.Am.S.M.E., M.Am.S.C.E.= 230 pages. 79 Illustrations. 12/6 net.
_Time and Clocks._ A Description of Ancient and Modern Methods of Measuring Time. =H. H. Cunynghame, M.A., C.B.= Crown 8vo. 3/6 net.
_Structural Geology._ =C. K. Leith.= 169 + viii pages. 68 Illustrations. Demy 8vo. 8/6 net.
_Seasonal Trades._ =Arnold Freeman, B.A.=, and =Sidney Webb=. With a Bibliography of each trade. 7/6 net.
_Industrial Engineering: Its Present Position and Post-War Outlook._ =F. W. Lanchester, M.Inst.C.E.= Crown 8vo. Paper, 1/- net.
_The Limitations of Science._ =Louis T. More, Ph.D.=, Professor in the University of Cincinnati. Crown 8vo. 6/6 net.
CONTENTS.—Science as a Symbol and a Law. The Metaphysical Tendencies of Modern Physics. Descartes and his Influence on Recent Science. The Scientific Method. The Classical and the New Mechanics. Scepticism and Idolatry in Science. Science as the Arbiter of Ethics. Index.