=Conduction of Electricity through Gases.= By J. J. THOMSON, D.Sc., LL.D., Ph.D., F.R.S., Fellow of Trinity College and Cavendish Professor of Experimental Physics. Demy 8vo. viii + 568 pp. 16_s._
CAMBRIDGE: PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS. · CAMBRIDGE PHYSICAL SERIES.
From Radio-Activity by Ernest Rutherford.
