CONTENTS OF VOL. XXXVII. THIRD SERIES. V 



Page 



On the existence of Iodine in Beet-root, by M. Lamy 237 



Electro-Magnetism as a Motive Power 238 



Meteorological Observations for July 1850 239 



Table. . . 240 



NUMBER CCL.— OCTOBER. 



Prof. W. Thomson's Remarks on the Forces experienced by 

 inductively Magnetized Ferromagnetic or Diamagnetic Non- 

 crystalline Substances , . . 241 



Prof. Graham on the Diffusion of Liquids {continued) 254 



Mr. J. Cockle on Impossible Equations, on Impossible Quanti- 

 ties, and on Tessarines 281 



Mr. Reuben Phillips on the Magnetism of Steam 283 



Mr. W. Spottiswoode on a Geometrical Theorem 289 



Mr. J. Kyd on the Chemical Formula of the Nitroprussides . . 289 

 Mr. W. J. M. Rankine on the Anomaly- Ruler ; an Instrument 

 to assist in the graphic representation of the place of a Gra- 

 vitating Projectile in an Elliptic Orbit 291 



The Rev. T. P. Kirkman on Bisignal Univalent Imaginaries . . 292 

 Notices respecting New Books : — Mr. J. K. Smythies's Essay 



on the Theory of Attraction 301 



Proceedings of the Royal Society 302 



Tenacity of Metals, by M. Baudrimont 308 



On the Artificial Formation of Lactic Acid and Alanin, by M. A. 



Strecker 308 



On the Action of Bases upon Salts, by M. Alvaro Reynoso . . 310 

 New Demonstration of a Geometrical Theorem, by John Hen- 



nessy, jun., Esq. , 312 



New mode of preparing Ethyalmin. Ethamic Acid 312 



On the Action of Carbon on Metallic Solutions, by M. Esprit. . 313 



On the Copper Test for Sugar, by M. Lassaigne 314 



New Reagent for Oxide of Carbon 315 



On a Cause of Variation in the Angles of Crystals, by M. J. 



Nickles 316 



On the Extraction of Iodine from Plants and from Coal, by M. 



Bussy 317 



Bromine a product of the Distillation of Coal, by M. Mene . . 317 

 Decomposition of Metallic Acids by Iodide of Potassium, by M. 



Schonbein 318 



Note by M. Du Bois-Reymond on M. Matteucci's Paper on Elec- 

 tro-Physiology , 318 



Meteorological Observations for August 1850 319 



Table 320 



