CONTENTS OF VOL. X. SIXTH SERIES. Vll 



Page 

 Notices respecting New Books : — 



Dr. A. H. Biicherer's Mathematische Einfuhruug in die 



Elektrouentheorie 613 



Mr. J. H. Jeans's The Dynamical Theory of G-ases .... 614 

 Dr. O. Frolich's Die Entwickelung der Elektrischen 



Messungen 614 



Proceedings of the Geological Society : — 



Mr. J. V. Elsden on the Igneous Bocks occurring between 



St. David's Head and Strmnble Head (Pembrokeshire). 615 

 Mr. Linsdall Bicbardson on the Bhsetic and Contiguous 

 Deposits of Glamorganshire, and on the Occurrence 

 of Bhaetic Bocks at Berrow Hill, near Tewkesbury . . 616 



NUMBEB LX.— DECEMBEB. 



Mr. Glenn Moody Hobbs on the Belation between P.D. and 



Spark-length for Small Values of the latter. (Plate XIII.) 617 

 Mr. H. E. Schmitz on the Thermoelectric Circuit of Three 



Metals 631 



Messrs. K. Honda and S. Shimizu on the Magnetization and 

 Magnetic Change of Length in Eerromagnetic Metals 

 and Alloys at Temperatures ranging from — 186° C. to 



+ 1200° C 642 



Prof. Louis Kahlenberg on the Theory of Electrolytic Disso- 

 ciation. (A Bectification of the " Correction " by 



Professor Harry C. Jones.) 662 



Mr. A. A. Bobb on the Conduction of Electricity through 



Gases between Parallel Plates. — Part II 664 



Prof. Louis T. More on Dielectric Strain along the Lines of 



Eorce 676 



Lord Kelvin : Plan of an Atom to be capable of Storing an 



Electrion with Enormous Energy for Badio-activity 695 



Notices respecting New Books :— 



Mr. E. T. "Whittaker's Treatise on the Analytical Dyna- 

 mics of Particles and Bigid Bodies 699 



Mr. James Walker's Analytical Theory of Light 700 



Landolt-Bornstein Physikalisch-Chemische Tabellen . . 701 

 Mr. G-. Martin's Besearches on the Affinities of the 

 Elements and on the Causes of the Chemical Similarity 



or Dissimilarity of Elements and Compounds 701 



Prof. Dr. A. Werner's Neuere Anschauungen auf dem 



Gebiete der Auorganischen Chemie 702 



Dr. W. Marshall Watts's Index of Spectra, Appendix P. 702 



J. Bronn's Verflussigtes Ammoniak als Losungsmittel . . 703 



Proceedings of the Geological Society 703-707 



Index , 708 



