VI CONTENTS OF VOL. II. FIFTH SERIES. 



Page 

 Prof. E. Ketteler on a Theory of the (Anomalous) Dispersion 



of Light in Singly and Doubly Refracting Media 332 



Mr. W. H. "Walenn on Division-Remainders in Arithmetic. . 345 

 ZSLr. 0. J. Lodge on a Model illustrating Mechanically the 

 Passage of Electricity through Metals, Electrolytes, and Di- 

 electrics, according to Maxwell's Theory. (Plate III.) .... 353 

 Prof. Challis's Theoretical Explanations of Additional Pheno- 

 mena of the Radiometer 374 



MM. \\\ C. Brogger and G-. vom Rath on certain large Crys- 

 tals of Enstatite found by "W. C. Brogger and H. H. 

 Reusch at Kjorrestad near Bamle, South Norway. (Plate IV.) 379 

 Messrs. A. W. Clayden and C. T. Heycock on the Spectra of 



Indium " 387 



Proceedings of the Royal Society : — 



Mr. ~\V". Spottiswoode on Electro-magnetic Rotation .... 389 

 Mr. "W. Crookes on the Movement of the Glass Case of a 



Radiometer 393 



Proceedings of the Geological Society : — 



The Rev. W. Bleasdell on Recent Glacial and Aqueous 

 Action in Canada and the Drift-Uplands of the Province 



of Ontario 394 



Mr. J. J. Murphy on the Glacial Climate and the Polar 



Ice-cap 395 



Mr. R. Mallet on the Mechanism of Production of Vol- 

 canic Dykes, and on those of Monte Somma .* . . 395 



On the Reactions of Metallic Thallium before the Blowpipe, 



by E. J. Chapman, Ph.D 397 



On the Physical Properties of Gallium, by Lecoq de Boisbaudran 398 

 Postscript to Professor Sylvester's " Note on Spherical Har- 

 monics " 400 



NUMBER XIII.— DECEMBER, 



Mr. G. Chrystal on Bi- and Unilateral Galvanometer Deflection 401 

 Prof. E. Ketteler on a Theory of the (Anomalous) Dispersion 



of Light in Singly and Doubly Refracting Media 414 



Mr. "W. Ackroyd on Selective Absorption 423 



Lord Rayleigh on the Resistance of Eluids. (Plate V.) 430 



Lord Rayleigh's Notes on Hydrodynamics. (Plate V.) 441 



Prof. Eorel on the " Seiches " of the Swiss Lakes . . .• 447 



M. G. Van der Mensbrugge on the Application of Thermody- 

 namics to the Study of the Variations of Potential Energy of 



Liquid Surfaces 450 



Prof. E. J. Chapman on some Blowpipe Reactions 459 



Proceedings of the Royal Society : — 



Dr. R. von Lang on the Friction between Water and Air 466 



