CONTENTS OF VOL. XXXVI. FOURTH SERIES. Vll 



Page 

 Mr. J. A. Phillips's Notes on the Chemical Geology of the 



Gold-fields of California 422 



Dr. Atkinson's Chemical Notices from Foreign Journals .... 433 

 Mr. G. Gore on the Relation of Mechanical Strain of Iron to 



Magneto-electric Induction 446 



Mr. G. J. Stoney on the Bearing of Recent Observations upon 



Solar Physics 447 



Prof. J. A. Wanklyn on the iVction of Sodium on Valerianic 



Ether 454 



Mr. J. J. Sylvester on Successive Involutes to Circles. — Second 



Note (With a Plate.) 459 



Notices respecting New Books : — Mr. R. P.Wright on the Ele- 

 ments of Plane Geometry for the use of Schools and Col- 

 leges, with a Preface by T. Archer Hirst 467 



On the Conductivity of some Liquids for Heat, by A. Paalzow. 469 

 On the Molecular Change produced by Magnetism in Steel Bars, 

 by M. Treves 471 



Index 473 



