18 Mr. Edward Arnold’s Autumn Announcements. 
NEW SCIENTIFIC BOOKS. 
PHYSICAL CHEMISTRY. 
$ts Bearing on Biology and Medicine. 
By JAMES C. PHILIP, M.A., Px.D., D.Sc., 
ASSISTANT ProFessor IN THE DEPARTMENT OF CHEMISTRY, IMPERIAL COLLEGE OF 
Science anp TECHNOLOGY. 
312 pp. Crown 8v0., cloth. 7s. 6d. net. 
The advances of Physical Chemistry have an important bearing 
on the study of all living structures, whether included under Biology, 
Botany, or Physiology proper. The present book gives the results 
of the most modern researches in the application of physico-chemical 
laws to the processes which, are characteristic of the living organism, 
and illustrative examples are specially chosen from the fields of 
biology, physiology and medicine. An elementary knowledge of 
physics, chemistry, and mathematics is alone assumed in the reader. 
THE PRACTICAL DESIGN OF 
MOTOR-CARS. 
By JAMES GUNN, 
LecTuRER ON Moror-Car ENGINEERING AT THE GLASGOW 
AND West oF ScoTLAND TECHNICAL COLLEGE. 
Fully Illustrated. Demy 8vo. 10s. 6d. net. 
A book for all designers and draughtsmen engaged in the practical 
manufacture of petrol engines and chassis for motor-cars. Each 
part of the mechanism is taken in detail, and the leading types of the 
various parts are compared and discussed, often with criticism based 
on exceptional experience in practice, yet always without bias or 
prejudice. The simple descriptions and clear diagrams will also 
render the book of value to the non-technical man, who as owner or 
prospective buyer of a car is interested in its mechanism. 
MODERN METHODS OF WATER 
PURIFICATION. 
By JOHN DON, A.M.I.Mecu. Ene., 
And JOHN CHISHOLM. 
Iilusivated. Demy 8vo. 158. net. 
Mr. Don, whose paper on ‘The Filtration and Purification of 
Water for Public Supply’ was selected by the Council of the Insti- 
tution of Mechanical Engineers for the first award of the ‘ Water 
Arbitration Prize,’ has here collaborated with Mr. Chisholm, the 
manager of the Airdrie, Coatbridge and District Water Works. 
The book will interest, not only the water engineer and Public 
Health Officer, but also all who recognize the paramount importance 
to modern towns of a water-supply above suspicion. A full 
description is given of modern methods of filtration. 
