CONTENTS of N° 243.— Fifth Series. 



X. On the Use of the Globe in the Study of Crystallography. 



By J. Y. Buchanan, F.B.S page 153 



XI. On the Condensation and the Critical Phenomena of 

 Mixtures of Ethane and Nitrous Oxide. By Dr. Kuenen" 173 



XII. A Theory of the Synchronous Motor. By "VV. G. Rhodes, 

 M.Sc , 195 



XIII. An Electromagnetic Effect. By F. W. Bowde^ 200 



XIV. Determination of the Critical and the Boiling Temperature 

 of Hydrogen. By Dr. K. Olszewski, Professor of Chemistry in 



the University of Cracow 202 



XV. The Velocity of Electric Waves. By Johx Trowbridge 

 and William Dttane 211 



XVI. Fractional Distillation applied to American Petroleum 

 aod Russian Kerosene. By J. Alfred Wanklyn and W. J. 

 Cooper 225 



XVII. Proceedings of Learned Societies : — 



Geological Society : — Prof. J. B. Harrison and A. J. Jukes- 

 Browne on the Chemical Composition of some Oceanic 

 Deposits ; Dr. C. S. Du Biche Preller on Fluvio-Glacial 

 and Interglacial Deposits in Switzerland; Mr. S. S. 

 Buckman on the Bajocian of the Mid-Cotteswolds .... 228-230 



XVIII. Intelligence and Miscellaneous Articles : — 



On the Magnetism of Asbestos, by Dr. L. Bleekrode 231 



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 post-paid, to the Care of Messrs. Taylor and Francis, Printing Office, Red I 

 Lion Court, Fleet Street, London. 



