CONTENTS op N° 241.— Fifth Series. 



XLVIII. On the Scale-Value of the late Dr. Joule's Ther- 

 mometers. By Arthur Schuster, E.E.S. (Plates V. & VI.) page 477 



XLIX. On the Kinetic Energy of the Motion of Heat and the 

 corresponding Dissipation Function. By Dr. Ladislas Natanson, 

 Professor of Natural Philosophy, University of Cracow 501 



L. The Heat of Combination of Substances in the Liquid and 

 Solid Condition. By Spencer Umfreville Pickering, F.R.S. . . 510 



LI. On Helmholtz's Electrochemical Theory, and some Con- 

 clusions deduced from the same. By Dr. E. Eicharz 529 



LII. Note on a Simple Graphic Illustration of the Determinantal 

 Relation of Dynamics. By G. H. Bryan 531 



LIII. Note on a Neglected Experiment of Ampere. By Prof. 

 Silt anus P. Thompson „ w 534 



LIV. Proceedings of Learned Societies : — 



Geological Society: — Mr. J. H. Cooke on the Pleistocene 

 Beds of the Maltese Islands ; Rev. B. Baron's Geological 

 Notes of a Journey in Madagascar ; Mr. R. B. Newton on 

 Eossils from Madagascar ; Prof. T. G. Bonney on the Nar- 

 borough District (Leicestershire) ; Mr. J. E. Marr on the 

 Tarns of Lakeland ; Mr. J. B. Lee on a New Instrument 

 for Surveying by the Aid of Photography, and on its 

 Applicability to Geological Purposes ; Mr. D. Draper on the 

 Marble Beds of Natal ; Mr. T. Leighton on the Lower 

 Greensand above the Atherfield Clay of East Surrey ; Mr. 

 W. S. Gresley on the Eastern Limits of the Yorkshire and 

 Derbyshire or Midland Coalfield, and on some Phases of the 

 Structure and Peculiarities of the Iron Ores of the Lake 

 Superior Region : . 542-547 



LV. Intelligence and Miscellaneous Articles : — 



On Electromagnetic Tractive Eorce, by M. Weber 547 



On the Influence of Magnetization on the Constants of Elasticity 

 in Iron, by A. Bock 548 



On the Magnetization of Iron by very small Forces, by Werner 

 Schmidt ib. 



Index , 549 



With Titlepage, Contents, Ac. ^ 4 1 5 K, 



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