PART II. 



Page. 



Art. IX (concluded.) 181 



Art. X. — The Kingdoms of Nature, their Life and Affinity. By 

 Dr. C. G. Carus, Physician to His Majesty the King of 

 Saxony 223 



Art. XI. — Researches on tlie Elasticity of Bodies which crystal- 

 lize regularly. By Felix Savart 225 



Art. XII. — Researches concerning the Nature of the Bleaching 



Compounds of Chlorine. By J. A. Balard 269 



Art. XIII. — On the LaAvs of the Conducting Powers of Wires of 



different Lengths and Diameters for Electricity. By E. Lenz 311 



Art. XIV. — Memoir on the Polarization of Heat. By M. Mel- 



LONi 325 



PART III. 



Advertisement on the Publication of Part III. 



Art. XV. — Memoir on the Motive Power of Heat. By E. 



Clapeyron, Mining Engineer 347 



Art. XVI. — Remarks on the cause of the Sound produced by 

 Insects in flying. By Dr. Hermann Burmeister, of the 

 University of Berlin 377 



Art. XVII. — Note on the Reflection of Radiant Heat. By M. 



Melloni 383 



Art. XVIII. — Observations and Experiments on the Theory of 

 the Identity of the Agents which produce Light and Radiant 

 Heat. By M. Melloni 388 



Art. XIX. — On the Constitution of the Superior Regions of the 



Earth's Atmosphere. By M. Biot 3f)3 



Art. XX. — Remarks on the real Occurrence of Fossil Infusoria, 



and their extensive Diffusion. By Prof. Ehrenberg 400 



Further Notices of Fossil Infusoria. By the Same 407 



Art. XXI. On the Chemical Effects of Electric Currents of low 

 tension, in producing the Crystallization of Metallic Oxides, 

 Sulphurets, Sulphates, <S:c. ; in forms frequently closely re- 

 sembling the native combinations. By M. Becquerel .... 414 



Art. XXII. On a New Combination of the Anhydrous Sulphuric 

 and Sulphurous Acids. By Henry Rose, Professor of Che- 

 mistry at the Royal University of Berhn 443 



Art. XXIII. — On the Forces which regulate the Internal Consti- 

 tution of Bodies. By O. F. Mossotti. (Communicated by 

 M. Faraday, Esq., D.C.L., F.R.S., &c.) .' 448 



