406 Index. 



Durocher, M. J., on the erratic phenomena of Scandinavia, 234. 

 Dykes of marble and quartz, their connection with plutonic rocks, 



in New South Wales, 201. 

 Dysluite identical with automolite, 383. 

 Electric sound, on, by Jacob! , 205. 



Electro-culture, experiments on, by Professor and Dr Fyfe, 143. 

 Elie de Beaumont, his Geologie Pratique noticed, 399. 

 Epidosite, a new species of mountain rock, 382, 

 Erratic phenomena, observations on, 234. 

 Espy, J. P., his meteorological report, 374. 

 Ethnography of Russian America, 35. 



Falconer and Cautley, their Fauna Antiqua Slvalensis noticed, 399. 



Forbes, James, Professor, his Tenth Letter on glaciers, 154. 



on the geology and topography and ancient glaciers of the 



Cuchullin Hills in the Island of Skye, 76. 



Forsyth, Charles, Esq., advocate, his geology of West Lothian, no- 

 ticed, 399. 



Fossils, on, their distribution in different formations, 258. 



Fox, Were, on certain pseudo-morphous crystals of quartz, 115. 



Fyfe, Andrew, Professor, on electro-culture, 143. 



Geological distribution of fossil plants, 285. 



Glaciers and icebergs, ancient, in Scotland, account of, by Charles 



Maclaren, Esq., F.R.S.E., 125. 



. Professor Forbes, his Tenth Letter on, 154. 



Glacier markings in South Wales, 207. 



Glacial action, traces of at North Berwick, 387. 



Goeppert, M., summary of the families and species of fossil plants 



occurring in different formations, 287. 

 Gold, produce of Siberia, by Sir R. J. Murchison, F.R.S.L., 340. 

 Great heights, sensations at, 373. 

 Guano contains microscopic siliceous sea animals, 387. 



Hay, D. R., Esq., a description of a machine for drawing the per- 

 fect egg-oval, &c., 331. 

 Horses, British, account of, by Professor David Low, 179. 



Ice, young, its formation, 378. 



Infusoria in volcanic rocks, by Ehrenberg, 393. 



Insects, excrements of, examined chemically, by Dr John Davy, 



231. 

 Iridescent silver, 396. 



Jade, white, analysis of, by M. A. Damour, 380. 



Kane, Sir R., on turbines, 401. 



Kersten on the conversion of sulphate of lead into lead-glance, by 

 means of organic substances, 382. 



