CONTENTS OF VOL. XLII. FIFTH SERIES. V 



NUMBER CCLVL— SEPTEMBER. 



Mr. F. W. Burstall on the Use o£ Bare Wire for Resistance- 

 Coils 209 



Prof. A. McAulay on the Wave-Surface and Rotation of 

 Polarization Plane in an Aeolotropic Electromagnetic 



Medium 224 



Mr. T. Preston on the Continuity of Isothermal Transforma- 

 tion from the Liquid to the Gaseous State 231 



Prof. J. G. MacGregor on the Hypotheses of Abstract Dy- 

 namics and the Question of the Number of the Elastic 



Constants , . 240 



Sir David Salomons on the Electric Discharge in a Magnetic 



Field 245 



Prof. G. F. FitzG-erald on the Longitudinal Component in 



Light 260 



Mr. A. Campbell on the Measurement of very large and very 



small Alternating Currents 271 



Dr. A. Groldhammer on the Analytical Representation of the 



Periodic System of the Elements 277 



Proceedings of the Geological Society : — 



Mr. W. Farnworth on a Head or Gateway driven into 

 the Eastern Boundary-fault of the South Staffordshire 



Coal-Field 283 



Mr. J. W. Spencer on the Geographical Evolution of 



Jamaica 283 



Messrs. S. S. Buckman and E. Wilson on Dundry Hill : 



its Upper Portion, or the Beds marked as Inferior 



Oolite (G 5) in the Maps of the Geological Survey . . 285 



Mr. F. W. Harmer on the Pliocene Deposits of Holland, 



and their Relation to the English and Belgian Crags . . 286 



On a Damping Action of the Magnetic Field on Rotating 



Insulators, by W. Duane 288 



The Action of Magnetism on Electromotive Force, bv Alfred 

 H. Bucherer 288 



NUMBER CCL VII.— OCTOBER. 



Prof. J. H. Poynting on Osmotic Pressure 289 



Mr. F. Bedell on Admittance and Impedance Loci 300 



N. Oumoff and A. Samoi'lofF on Electric Images in the 



Field of a Hittorf 's (Crookes') Tube 308 



B. Rosing on the Possibility of explaining the Phenomena of 

 Magnetism by the Hypothesis of Participation of Matter 



in the Motion of the Magnetic Field 314 



Dr. G. Johnstone Stoney on Microscopic Vision .......... 332 



