CONTENTS OF VOL. XIV. SIXTH SERIES. Vll 



Page 

 Mr. A. S. Eve on the Amount of Eadium Emanation in the 



Atmosphere near the Earth's Surface 724 



Prof. E. Butherford on the Production and Origin of Eadium. 733 

 Prof. J. H. Poynting on Prof. Lowell's Method for Evaluating 

 the Surface Temperatures of the Planets ; with an Attempt 

 to Eepresent the Effect of Day and Night on the Tempe- 

 rature of the Earth 749 



Prof. J. 0. McLennan on the Badioactivity of Lead and other 



Metals 760 



Dr. R. v. Hirsch and Mr. E. Soddy on a Gas generated from 



Aluminium Electrodes 779 



Prof. E. Castelli on Gradual Modification of the Eirst Linear 



Spectra of Emission of Mercury. (Plate XVII.) 784 



Proceedings of the Geological Society : — 



Mr. B. D. Oldham on the Constitution of the Interior of 

 the Earth as revealed by Earthquakes : Some New Light 



on the Origin of the Oceans 786 



Dr. C. Davison on the Swansea Earthquake of June 27th, 



1906 780 



Dr. C. Davison on the Ochil Earthquakes of September 

 1900 to April 1907 787 



Index 788 



