[ iii ] 
CONTENTS. 
(A) 
VOL. 196. 
List of Illustrations.. . page v 
AdAU'i'tisenjent.vii 
List of Institutions entitled to receive tlie Philosophical Tiansactions or Proceedings of the Royal 
Society.ix 
T. The Kinetic Theory of Planetcory Atmos'pheres. By G. H. Bryan, Sc.D., F.d.S., 
Kic/e 1 
II. Energy of Rontgen and Becquerel Raya, and the Energy required to produce an 
Ion in Gctses. By E. Butherford, M.A., B,Sc., Macdoncdd Professor of 
Physics, and B. K. McClung, B.A., Demonstrator in Pity sics, McGill 
University, Montreal. Communicated hy Professor J. J. Thomson, F.R.S. 25 
III. The Circulation of the Surface Waters of the North Atlantic Ocean. By H. N. 
Dickson, B.Sc., Lecturer in Physical Geography in the University of Oxford. 
Communicated hy Sir John Murray, K.C.B., F.R.S. . 61 
IV. On a New Manometer, and on the Lanv of the Pressure of Gases between 1'5 and 
O'Ol Millimetres of Mercury. By Lord Bayleigh, F.R.S . 205 
V. Data for the Problem of Evolution in Man. —VI. A First Study of the Correlation 
of the Human Skull. By Alice Lee, D.Sc., with some assistance from 
Karl Pearson, F.R.S., University College, London . 225 
a 2 
