CONTENTS OF VOL. XXXVIII 



(FOURTH SERIES.) 



NUMBER CCLIL— JULY 1869. 



Page 



The Hon. J. W. Strutt on some Electromagnetic Phenomena 



considered in connexion with the Dynamical Theory 1 



Dr. W. H. Broadbent on the Function of the Blood in Muscular 



Work 15 



Mr. T. R. Edmonds on Vital Force according to Age, and the 



"English Life Table " 18 



Prof. W. A. Norton on the Fundamental Principles of Molecular 



Physics. Reply to Professor Bayma 34 



Prof. Challis's Note on the Hydrodynamical Theory of Mag- 

 netism 42 



Mr. W. C. Roberts's Note on the Experimental Illustration of 

 the Expansion of Palladium attending the Formation of its 



Alloy with Hydrogenium 51 



Prof. Haidinger on the Polarization of Light by Air mixed with 



Aqueous Vapour 54 



Dr. A. H. Gallatin on Ammonium Alloys, and on Nascent-Hy- 

 drogen Tests 57 



Proceedings of the Royal Society : — 



Mr. G. Gore on a momentary Molecular Change in Iron 



Wire 59 



Mr. G. Gore on the Development of Electric Currents by 



Magnetism and Heat 64 



Messrs. E. Frankland and J. N. Lockyer's Preliminary Re- 

 searches on Gaseous Spectra in relation to the Physical 



Constitution of the Sun 66 



Mr. W. Huggins on a Method of viewing the Solar Promi- 

 nences without an Eclipse 68 



Mr. W. Huggins on the Heat of the Stars 69 



Sir W. Thomson on the Fracture of Brittle and Viscous 



Solids by " Shearing " 71 



Proceedings of the Geological Society : — 



Mr. G. M. Browne on Floods in the Island of Bequia . . 73 



