CAMBRIDGE PHYSICAL 
SERIES. 

Conduction of Electricity through Gases. By J. J. 
Tuomson, D.Sc., LL.D., Ph.D., F.R.S., Fellow of Trinity College 
and Cavendish Professor of Experimental Physics. Demy 8vo. 
vilit+568 pp. 16s. 
CONTENTS. 
I. Electrical Conductivity of Ix. Tonisation in Gases from 
Gases in a normal state. Flames. 
Il. Properties of a Gas when in X. Tonisation by Light. 
the conducting state. Photo-Electric Effects. 
III. Mathematical Theory of the XI. Ionisation by Rontgen 
Conduction of Electricity Rays. 
through a Gas containing XII.  Becquerel Rays. 
Tons. XIII. Spark Discharge. 
IV. Effect produced by a Mag- XIV. The Electric Arc. 
netic Field on the Motion XeVe Discharge through Gases 
of the Ions. at. Low Pressures. 
V. Determination of the Ratio XVI. Theory of the Discharge 
of the Charge to the Mass through Vacuum Tubes. 
of an Ion. XVII. Cathode Rays. 
VI. Determinationofthe Charge XVIII. Réntgen Rays. 
carried by the Negative XIX. Properties of Moving Elec- 
Ion. trified Bodies. 
VII. Onsome Physical Properties Supplementary Notes. 
of Gaseous Ions. Index. 
VIII. Ionisation by Incandescent 
Solids. 
Times.—‘‘It is difficult to think of a single branch of the physical 
sciences in which these advances are not of fundamentalimportance. The 
physicist sees the relations between electricity and matter laid bare in 
a manner hardly hoped for hitherto.... The workers in the field of Science 
are to-day reaping an unparalleled harv est, and we may congratulate our- 
selves that in this field at least we more than hold our own among the 
nations of the world.” 
A Treatise on the Theory of Solution, including the 
Phenomena of Electrolysis. By WILLIAM CECIL DAMPIER WHETHAM, 
M.A., F.R.S., Fellow of Trinity College. Demy 8vo. x+ 488 pp. 
Ios. net. 
Atheneum.— The choice and arrangement of the matter included are 
alike excellent.... Mr Whetham’s book is probably the most complete and 
satisfactory treatise on the subject in any language and as such is sure to 
enjoy a wide popularity.” 
Nature.—‘‘ The treatment throughout is characterised by great clearness, 
especially in the physical and mathematical portions, so that the volume 
may be warmly recommended to students of chemistry.” 
2000 

VI.05 
