406 



INDEX. 



R. 



Railway cars, rapidity of motion in, 197. 

 Railways constructed with cast iron 



sleepers, 318. 

 Rain, on unequal quantities collected, 



by the guage, 287. 



quantity in different parts of the 



earth, 295. 

 Rawson, Mr., on fires in London, 316. 

 Raleigh's tyfoon of 1835, 210. 

 Recalculation of observations on the 



magnetic dip and intensity in Ireland, 



296. 

 Reciprocating armature engine, 263. 

 Redfield, W. C, law of storms, 182, 



276. 



on the courses of hurricanes 



and tyfoons of China sea, 201. 

 Reid, Col., on Mr. Redfield's law of 



storms, 276. 



his work on storms noticed, 



182. 

 Reports on shooting stars, 167, 223, 323. 



361 , 368. 

 Respiration, M. Magnus on, 198. 

 Riddell, Dr., new mode of preserving 



plants, 338. 



on electro magnetic engine, 



343. 

 Ripple marks in the transition, 248. 

 Robison, substitute for barometer, 294. 

 Rodman, W. W., on new localities of 



minerals, 179, 180. 

 Rogers, H. D., opinion on age of gray- 



wacke attacked, 243. 



the same explained by ed- 

 itors, 250. 

 Russell on waves, 290. 



substitute for mountain barom- 

 eter, 294. 



S. 



Salisbury, Dr. S^., his analysis of the 

 mineral waters of Avon, 188. 



Sandstone, footsteps on, near Liverpool, 

 367. 



of New Jersey containing fos- 

 sil fish, 192. 



peculiar variety of, 249. 



Sang, Mr., on rapidity of motion in rail- 

 way cars. 197. 



Scanlanon commercial carbonate of am- 

 monia, 297. 



nitrate silver not blackened by 

 sun light, 298. 



Schweigger Seidel, his general electric 

 formula, 356. 



Serpentine in Vermont, 390. 



Shells, new species of, described by 

 Judge Tappan, 268. 

 supposed new, 309. 



Shepard, C. U., notice of a new min- 

 eral species, (danburite,) 137. 



Shepard, C.U.,2d part of mineralogy by 



him, 187. 

 Ships without masts, 332. 

 Shooting stars, 167, 223, 323, 361, 368. 

 Siberia, frozen ground of, 305. 

 Silurian and transition system, 243. 

 Smith, Henry, letter to Prof Silliman, 

 336. 



Junius, letters on steam naviga- 

 tion, 160, 332. 



Dr., on variation in quantity of 

 rain in different parts of the earth, 

 295. 



H. L., account of his telescope, 

 174, note. 

 Sopwith's mode of constructing secre- 

 taires, 317. 

 Sowerby, on Encrinus monihformis, 



311. 

 Specific gravity of several elements, 



298. 

 Spontaneous combustion of wood, 144. 

 Statistics, section of, in British Associ- 

 ation, 314. 

 Statistical tables, 315. 

 Steam navigation, letters on, 160, 161, 

 332, 333. 



boilers, new construction of, 318. 

 Stereoscope, instrument for illustrating 



binocular vision, 295. 

 Storms, Reid on the law of, 182. 



considered before the British 

 Association, 276. 



Col. W. Reid's book on, 182. 

 natural system of, 222. 

 of Europe, 222. 

 Storm in New Hampshire in 1821, 233. 

 Strickland, Mr. A., on Ardea alba, 311. 

 St. John's river, remarks on, 48. 

 Sugar, (diabetic,) analysis of, 298. 



of starch, 298. 

 Sulphur springs in Florida, 51. 



vapor, specific gravity of, 298. 

 Surveying and exploring expedition to 



the South Seas, 192. 

 Substitute for the mountain barometer, 

 294. 



T. 



Tanning, new process for, 303. 

 Tappan, Judge, description of new 



shells, 268. 

 Taylor, W. C, change of population in 



New Zealand, 315. 

 Temperature of the interior of the earth, 

 293. 



of deep mines, 297. 

 produced by evaporation of 

 solid carbonic acid, 347, 353. 



of wells and springs at dif- 

 ferent elevations from earth's surface, 

 379. 



in different geological 

 epochs, 240. 



