CONTENTS OF VOL. XXXII. FIFTH SERIES. V 



Page 

 Prof. "VV. E. Ayrton and Dr. W. E. Sumpner on Alternate 

 Current and Potential Difference, Analogies in the Methods 



of Measuring Power 204 



Mr. W. Sutherland on a Kinetic Theory of Solids, with an 



Experimental Introduction * 215 



Notices respecting New Books : — 



Mr. G. P. Becker on the Structure of a Portion of the 



Sierra Nevada of California 226 



Mr. G. F. Becker on Antiquities from under Tuolumne 



Table Mountain in California 226 



Mr. Gr. P. Becker's Notes on the Early Cretaceous of 



California and Oregon 227 



Mr. J. G-. Hagen's The Photochronograph and its Appli- 

 cation to Star-Transits 228 



Proceedings of the Geological Society : — 



Eev. E. Hill on Wells in West-Suffolk Boulder-clay 228 



Mr. P. Rutley on the Melaphyres of Caradoc, with Notes 



on the Associated Pelsites 229 



Mr. J. J. Lister on the Geology of the Tonga Islands . . 229 

 Mr. C. Davison on the Inverness Earthquakes of Novem- 

 ber 15th to December 14th, 1890 230 



On the Determination of the Dielectric Constant of Glass by 



aid of very rapid Electrical Oscillations, by R. Blondlot . . 230 

 On an Improved Method of determining Specific Heat by 

 means of the Electrical Current, by Prof. Pf aundler 232 



NUMBER CXCVI.— SEPTEMBER. 



Mr. C. Chree on some Applications of Physics and Mathe- 

 matics to Geology. — Part 1 233 



Mr. J. Parker on the Theory of Magnetism and the Absurdity 



of Diamagnetic Polarity 253 



Dr. A. Richardson on the Expansion of Chlorine by Light as 

 applied to the Measurement of the Intensity of Rays of 



High Refrangibility. (Plates III. & IV.) 277 



Mr. A. P. Chattock on the Electrification of Steel Needle- 



Points in Air. (Plate V.) 285 



Dr. A. W. Riicker on the Relation between the Density and 



Composition of Dilute Sulphuric Acid 304 



Sir G. G. Stokes on the Theory of the Solitary Wave 314 



Notices respecting New Books : — 



Profs. Oliver, Wait, and Jones's Treatises on Trigono- 

 metry and on Algebra 316 



Prof. Jones's Logarithmic Tables 316 



Dr. H. B. Pine's The Number-System of Algebra treated 



Theoretically and Historically 317 



Mr. E. W. Hobson's Treatise on Plane Trigonometry . . 317 



