402 



INDEX. 



Deinotherium, models of teeth of, 362. 



Depth of mines, 374. 



Deutarseniuret of nickel of Riechelsdorf, 



241. 

 Dewey, Prof. C, on caricography, 245. 

 Diamonds in North America, 394. 



, matrix of, 3G6. 



, nature of, 366. 



Dip of the compass needle, 353. 



Dodo, cast of the head, 362. 



Draper, J. W., on coins and medals, 157. 



E. 



Echinus, fixation of the spines of; 353. 



Education of children, 349. 



Electrical currents, influence of terres 



trial magnetism and electro-dynamic 



magnets on chemical action of, 369. 

 Electricity, retained in a vacuum, 354. 

 Electro-dynamic magnets, influence on 



chemical action of electrical currents. 



369. 



Fata Morgana, at Gibraltar, 214. 



Ferruginous deposits in Ohio and Ken- 

 tucky, 129. 



Fish, fo.ssii, 351. 



, Agassi z's researches on 



363. 



Flora, fossil,' of N. America, new work 

 on, 393. 



Fluids, resistance of, 274, 351. 



Forces, parallelogram of, 345. 



Forest, fossil, near Glasgow, 352 



trees in the valley of Ohio, 14. 



Fossil columnar madrepore, 99. 



fish, 351. 



, Agassiz's reseai'ches on, 363 



flora of N. America, Rafinesque's 



work on, 393. 



forest, near Glasgow, 352. 



mammalia, 146. 



organic remains of coal measures 



&c. in Hildreth's account of the valley 



of Ohio, 149, &c. 

 Fossil plants in the valley of Ohio, 1. 



trees in sandstone, 49, 112. 



Fox, Charles, on some American birds 



&c., 291. 



G. 



Galvanic machine, 354. 



Gauly river, geology and topography of, 

 98. 



Geological Society of Penn., Transac- 

 tions of, part 11, 391. 



Geology, Lyell's, 4th London edition, 

 368. 



Geology of a part of England and Wales, 

 352. 



■ Monte Video, South Ameri- 

 ca, 240. 



Geology of the Cheat and Greenbrier 

 Mountains, 63. 



Gauly river, 98 



Kiskiminitas, 74. 



Lakes and valley of the 



■Mississippi, 201. 



Monongahela, 58. 



— Muskingum, 15, 



valley of the Ohio, 1. 



vicinity of Cape of Good 



Hope, 230. 



German journals, notice of, 375. 



Gibson, Judge J. B., on the geology of 

 the Lakes and valley of the Mississip- 

 pi, 201. 



Good Hope, topography and geology of 

 the vicinity of, 230. 



Grotto of plants in Ohio, 18. 



Guyandottand Sandy rivers, topography 

 of, 126. 



, geology and 



mineralogy of, 128. 



H. 



Halley's Comet, 155. 

 Flanging rock, 139. 



Hars, Prof R., apparatus for obtaining 

 prussic acid, 244. 



, on explosive reaction of 



hydrogen and chlorine in solar rays, 

 243. 



Hawkins' collection of Saurian remains, 

 367. 



Heat of the sun, 349. 



, long continued effect of, on miner- 

 als, 357. 



Hitldreth, Dr. S, P., on the bitumuous 

 coal formation of the valley of Ohio., 

 and its organic remains, vegetable and 

 animal, 1. 



Hitchcock, Prof E., on foot marks of 

 birds, ornithichnites, on new red sand- 

 stone of Massachusetts, 307. 



Hockhocking Valley, topography of, 

 146. 



Hosack, obituar}^ of, 395. 



Human remains in England, 364. 



, new mode of preserv- 

 ing, 359., 



Hydatids in human muscles, 353. 



Hydrogen, explosive reaction with chlo- 

 rine in the sun's rays, 243. 



L 



Idria, quicksilver mines of, 219. 



Iguanodon, cast of a tibia of, 362. 



Indiana, meteorological notices in, 294. 



Ireland, topaz in, 374. 



Iron, application of hot blast in produ- 

 cing cast, 356. 



Iron ores in Kentucky, Ohio, &c., 126, 

 129, 134, 137, 139. 



Ischil Salt mountains, 225. 



