vi €ONTENTS. 
PART II. 
Page. 
Arr. IX. ee a i. ieee, SESE 
Art. X.—The Kingdoms of Nate their Life suid Affinity. By 
Dr. C. G. Carus, shelens - to His Majesty the King of 
Saxony ... 223 
Art. XI. S escecse on the ‘Elasticity of Bodies chee ory aol 
lize regularly. By Fexrix SAvartT ..... . 225 
Art. XII.—Researches concerning the Nature af the Bleaching 
Compounds of Chlorine. By J. A. BaALarRD ..... . 269 
Art. XIII.—On the Laws of the Conducting Powers of Wier ‘aE 
different Lengths and Diameters for Electricity. By E. Lenz 311 
Art. XIV.—Memoir on the Polarization of Heat. By M. Met- 
LOBE 92 dQ BSA. Ge RL Ae ey Aes eee a ene 
PART III. 
Advertisement on the Publication of Part III. 
Art. XV.—Memoir on the Motive Power of Heat. By E. 
CiapeEyron, Mining Engineer ...... 347 
Art. XVJ.—Remarks on the cause of ie iSound ‘produwed by 
Insects in flying. By Dr. Hermann Burmeister, of the 
University of Berlin ...... Naor. 
Art. XVII.—Note on the Reflection’ of ‘Ridtiant Heat. "Be M. 
WEEDON ag toe 2 se tie sensei. «2: ee ee 383 
Art. XVIII.—Observations and Experiments on the Theory of | 
the Identity of the Agents which produce Light and Radiant 
Heat. “By Me MBE Dont” oot fo ag nee 5, eet oe 388 
Art. XIX.—On the Constitution of the Superior Regions of the 
Earth’s Atmosphere. By M. Biot ...... 2 39S 
Art. XX.—Remarks on the real Occurrence af Fossil Infdgpeti, 
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, &c.; in forms frequently closely re- 
sembling the native combinations. By M. BecqurreL .... 414 
Art. XXII. Ona New Combination of the Anhydrous Sulphuric 
and Sulphurous Acids. By Henry Rose, Professor of Che- 
mistry at the Royal University of Berlin ...... 443 
Art. XXIII.—On the Forces which regulate the fatarnal Constiz 
tution of Bodies. By O. F. Mossorrs. (Communicated by 
M: FaxapAy, Esq. D-C.L., FLR.S., &€.)... 2; oe. eee 
