VI CONTENTS OF VOL. XXXII. FIFTH SERIES. 



Editorial Note on Mr. Parker's Paper on the Absurdity of 



Diamagnetism , 318 



On Homologous Spectra, by J". S. Ames 319 



Magneto-Optic Phenomenon, by E. Sissingh 320 



NUMBEE CXCVIL— OCTOBEE. 



Prof. J. J. Thomson on the Discharge of Electricity through 

 Exhausted Tubes without Electrodes 321 



Mr. M. Carey Lea on Allotropic Silver 337 



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

 tics to Geology.— Part II 342 



Messrs. W. C. Eoberts-Austen and A. W. Eiicker on the 

 Specific Heat of Basalt 353 



Dr. J. "Walker on the New Theories of Solution 355 



Mr. H. M. Vernon on a New Modification of Phosphorus . . 365 



Messrs. J. Walker and J. L. S. Hatton on an Experimental 

 Determination of the Beats in the Vibrations of a Eevolving 

 Bell 370 



Sir W. Thomson on Periodic Motion of a Finite Conservative 

 System 375 



Mr. E. J. Smith on some of the Effects of Magnetism on Eods 

 •of Iron, Nickel, aud other Metals which have received a 

 permanent Torsional Set ; and a new form of Chronograph 

 Stylus 383 



Notices respecting New Books : — 



Dr. H. Whiting's Course of Experiments in Physical 



Measurement. — Part III. Principles and Methods , . 396 

 Mr. T. W. Backhouse's Structure of the Sidereal Uni- 

 verse 397 



Eetinal Oscillations, by M. Charpentier 397 



Lecture-illustration of Complementary Colours, by Nik. von 

 Klobukow 399 



On a Eemarkable New Acid, by Th. Curtius 400 



• '■ • ■ NUMBEE CXCVIIL— NOVEMBEE. 



Messrs. E. L. Nichols and B. W. Snow on the Influence of 

 Temperature on the Colour of Pigments 401 



Lord Eayleigh on Dynamical Problems in Illustration of the 

 Theory of Gases 424 



Prof.. J.. J. Thomson on the Discharge of Electricity through 

 Exhausted Tubes without Electrodes 445 



