CONTENTS. V 



Page 

 Mr. J. Stenhouse's Analysis of the Oils of Elemi and Olibanum 184 

 Mr. J. Stenhouse's Chemical Examination of Palm Oil and 



Cacao Butter 186 



Dr. S. Marianini's Examination of a Fourth Experiment ad- 

 duced hy Professor Faraday in support of M. de la Rive's 

 Theory, and regarded by Dr. Fusinieri to be demonstrative. . 193 

 Messrs. W. Francis and H. Croft's Notices of the Results of 



the Labours of Continental Chemists 202 



Proceedings of the Geological Society 212 



London Institution — Conversazioni 234 



On the Fossil Wax of Gallicia, by M. P. Walter 235 



Phosphate of Copper from Hirschberg, on the Saale, in Russian 



Voigtland ; analysed by Kiihn 236 



On Minium, by M. Levol 237 



Action of anhydrous Phosphoric Acid upon anhydrous Cam- 

 phoric Acid, by M. P. Walter 238 



Meteorological Observations for January 1841 239 



Table 240 



NUMBER CXVIL— APRIL. 



Prof. A. Connel on the Voltaic Decomposition of Aqueous and 

 Alcoholic Solutions 241 



Prof. J. J. Sylvester on a new and more general Theory of Mul- 

 tiple Roots 249 



Dr. H. Kopp on the Atomic Volume and Crystalline Condition 

 of Bodies, and on the Change of Crystalline Form by means 

 of Heat 255 



Dr. C. Schafhaeutl's further Remarks on some of the Circum- 

 stances under which Steam developes Electricity 265 



Prof. A. De Morgan on a Suggestion relative to Barrett's 

 Method of computing the Values of Life Contingencies .... 268 



The Rev. B. Powell's Note to a Paper " On cei-tain points in the 

 Undulatory Theory, &c." in the last Number of the Philoso- 

 phical Magazine 270 



M. Cantraine's Report on the Memoir on Electric Currents in 

 Warm-blooded Animals, by Prof. Zantedeschi and Dr. Favio, 

 presented to the Royal Academy of Sciences and Belles Let- 

 tres of Brussels, on the 4th of April, 1840 271 



Messrs. W. Francis and H. Croft's Notices of the Results of the 

 Labours of Continental Chemists (continued) 276 



Dr. R. Kane's Abstract of the History of a new class of Pla- 

 tina-salts, discovered by M. Gros, with some Remarks on 



their true Constitution 293 



Some Remarks on Messrs. Francis and Croft's Abstracts from 

 the Foreign Journals. By a Correspondent 296 



