"The present work, though nominally a third edition of 'Bacteria in Relation to the Economy of Nature, Industrial Processes, and the Public Health,' is virtually a new book, written with the object of supplying all that is necessary for the student of hygiene and the officer of health to know, so far as every-day problems of sanitation and preventive medicine demand.... Dr Newman has done a good work in producing a treatise which places at the service of the community what is known about all these topics."—Daily Telegraph.

THE RECENT DEVELOPMENT OF PHYSICAL SCIENCE. By W.C.D. Whetham, M.A., F.R.S. Illustrated. Large Crown 8vo. 5s. net.

The Philosophical Basis of Physical Science—The Liquefaction of Gases and the Absolute Zero of Temperature—Fusion and Solidification—The Problems of Solution—The Conduction of Electricity Through Gases—Radio-Activity—Atoms and Æther—Astro-Physics—Index.

THE REALM OF NATURE. An Outline of Physiography. By H.R. Mill, D.SC, LL.D., Director of the British Rainfall Organisation. Second Edition. Revised and entirely reset. With 19 coloured Maps and 73 Illustrations in the text. Crown 8vo. 5s. net.

"Dr Mill is to be congratulated on having now brought his information, so far as space permitted, well up to date. The most striking features of the work are its comprehensiveness and conciseness.... It would, indeed, be difficult to point to any other English work on physiography giving so much trustworthy matter in equally condensed form, yet so readable."—Athenæum.

NATURE AND ORIGIN OF FIORDS. By J.W. Gregory, D.Sc., F.R.S., Author of "The Dead Heart of Australia." With Illustrations. Demy 8vo. 16s. net.

Professor T.G. Bonney says in Nature, 12th Feb. 1914:—"But we must conclude, and do this by expressing our hearty thanks to him for this admirable history of fiords and other forms of inlets of the sea. It will be a great boon to students, for it is a veritable encyclopædia, full of important facts."

MECHANISM, LIFE AND PERSONALITY. An Examination of the Mechanistic Theory of Life and Mind. By J.S. Haldane, M.D., LL.D., F.R.S., Fellow of New College and Reader in Physiology, University of Oxford. Crown 8vo. 2s. 6d. net.

"Dr Haldane has succeeded in packing an immense amount of knowledge and thought into the compass of a small volume. The complexity of his themes has never for a moment betrayed him into ambiguity either of thought or expression, and the pervading temptation to stray into bypaths, the failure to resist which makes the weakness of so much otherwise fine work of this class, has been most successfully resisted. The clarity of the book may fairly be described as remarkable."—Sunday Times.