430 Index. 



De8hayes, his Traite Elementaire de Conchyliologie, noticed, 425. 

 Dutrochet, M., experiments on the temperature of vegetables with 

 the thermo-electric apparatus, 103. 



Ehrenberg, C. G., Professor, on the calcareous and siliceous micro- 

 scopic animals which form the chief component parts of creta- 

 ceous rocks, 161. 



Electrical currents in metalliferous veins, remarks on, by R. Were 

 Fox, Esq., 267. 



Electrical currents in metalliferous veins, researches on, by Professor 

 Reich, 1. 



Fishes, scales of, described, by L. Mandl, M, D., 113, 274 — remarks 

 on the scales of, by M. Agassiz, in reply to Mandl, 287. 



Fluoric acid, on its supposed existence in certain animal matters, by 

 G. O. Rees, M. D., 90. 



Fossil organic remains found in the great Southern Highlands of 

 Scotland, 198. 



Fox, Were, Esq., remarks on electric currents in metalliferous veins, 

 267. 



France, diseases of, considered in their relation to its meteorological 

 history, by Dr Fuster, 238. 



Fusibility of minerals, scale of, proposed, 419. 



Fuster, Dr, his observations on the diseases of France in their rela- 

 tion to the seasons, 238. 



Fyfe, Dr Andrew, on daguerreotype, 205. 



Glaciers of the Alps, observations on, by M. J. Andre de Luc, 1 5. 

 Graham, Professor, his descriptions of rare and new plants, 397. 

 Granite, theory of its formation by Keilhau, notes on, 366 ; remarks 



on Keilhau's theory of granite by Berzelius, 371. 

 Greenockite, a new mineral species belonging to the order Blende, 



described, 390 — chemical analysis of, 392. 



Hoffman, Professor, of Berlin, on rivers which break through moun- 

 tain-chains, 42. 

 Human races, on the extinction of, by Dr Pritchard, 166. 



Iceland moss, &c., on the removal of the bitter taste and lichenous 

 odour of, 269. 



Inflammable gases of the Prussian coal-mines, described, by Profes- 

 sor Bischof, 1&3. 



Infusoria, the digestive organs of, considered, by Dr Meyen, 271. 



Insects, their geographical distribution traced, 170, 224. 



Instructions, zoological, for the French Scientific Expedition to the 

 North of Europe, 53 — also for the British Antarctic Expedition, 

 72. 



Jackson, Dr, on the cultivation of roses, 326. 



Keilhau, Professor, explanatory notes on his paper relating to gra- 

 nite, 366. — Remarks on his memoir on granite, by Berzelius, 

 371. — His answer to Berzelius, in a note, 378. 



