mand.... 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 AEther--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."--_Athenaeum_.

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 encyclopaedia,
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_.

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THE PROGRESSIVE SCIENCE SERIES

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