VIII CONTENTS OF VOL. XXVIII. — FOURTH SERIES. 



Page 



M. F. M. Kaoult on the Thermal Phenomena of Voltameters, 

 and Measurement of the quantitiesof Heat absorbed inElectro- 



chemical Decompositions 551 



Dr. C. K. Akin on Kay-Transmutation 554 



Notices respecting New Books : — Mr. W. A. Darby's Astrono- 

 mical Observer. A Handbook to the Observatory and the 



common Telescope , 561 



Proceedings of the Geological Society : — 



Messrs. P. M. Duncan and G. P. Wall on the Geology of 

 Jamaica; with Descriptions of new Species of Cretaceous, 



Eocene, and Miocene Corals 562 



Mr. R. Tate on the Correlation of the Irish Cretaceous 



Strata 562 



On the Verification of the Law of Electrolysis when external 



work is performed by the Galvanic Current, by M. J. L. Soret. 563 

 Index 564< 



PLATES. 



I. & II. Illustrative of Prof. Mitscherlich's Paper on the Spectra of 

 Compounds and of Simple Substances. 



III. Illustrative of Dr. Viktor von Lang's Paper on the Crystalline forms 

 of Gadolinite. 



IV*. Illustrative of Mr. G. F. Rodvrell's Paper on the Trompe. 



V. & VI. Illustrative of Mr. C. Tomlinson's Paper on the Cohesion-figures 

 of Liquids. 



VII. Illustrative of Dr. Viktor von Lang's Paper on some Crystalline forms 

 of Malachite, Gismondine, and Hersch elite. 



* To Binder :— By mistake, printed " Plate III." 





