Part 32

Shooting stars, in the years 1768, and 686 B.C.; A.D. 7, 532, 558, 585, 611, 744 or 747, 750, 764, 765, 829, 855, 899, 901, 902, 912 or 913, 931 or 934, 935, 1029, 1060, 1090, 1094, 1095, 1096, 1106, 1122, 1199, 1202, 1243, 1366, 1398, 1399, 1635, 1636, 1743, 1799, 1803, 1832, 1833, notices of, _E. C. Herrick_, xl, 349 to 363. ---- ----, of August in the years 1800, 1815, 1819, 1822, 1836, notices of, _E. C. Herrick_, xxxvii, 335, 336. ---- ----, of December, 1692, _E. C. Herrick_, xlii, 400. ---- ----, of December, 1798, _H. W. Brandes_, xxxv, 361. ---- ----, of November, 1799, noticed by Humboldt, _S. P. Hildreth_, xxvi, 87. ---- ----, ----, ibid, _E. C. Herrick_, xl, 363. ---- ----, of June, 1799, 1812, 1817, _E. C. Herrick_, xlii, 201. ---- ----, ----, 1777, _Messier_, xxxiii, 364. ---- ----, of April 20, 1803, _D. Olmsted_, xxvi, 135. ---- ----, ----, _E. C. Herrick_, xxxvi, 358; xl, 363. ---- ----, of November, 1803, a large meteor in England, xxvi, 137. ---- ----, of December, 1809, _E. C. Herrick_, xxxvi, 357. ---- ----, of December, 1824, _E. C. Herrick_, xxxvi, 357. ---- ----, of November, 1831, _Berard_, xxx, 374. ---- ----, of November, 1832, notices by _D. Olmsted_, xxvi, 134, 136. ---- ----, ----, in Russia, xxxi, 189. ---- ----, ----, off Pernambuco, _G. C. Schaeffer_, xxxiii, 133. ---- ----, ----, _Gautier_, xxxiii, 364. ---- ----, ----, in England, xxvi, 136. ---- ----, ----, in the Tyrol, xxvi, 134. ---- ----, ----, at Mocha on the Red Sea, xxvi, 136. ---- ----, of November, 1833, _E. Hitchcock_, xxv, 354. ---- ----, ----, _D. Olmsted_, xxv, 363; xxvi, 132; xxix, 376. ---- ----, ----, _A. C. Twining_, xxvi, 320.^f ---- ----, ----, _A. D. Bache_, xxix, 383. ---- ----, of November, 1834, _A. D. Bache_, xxvii, 335; xxviii, 305; xxix, 383. ---- ----, ----, _A. C. Twining_, xxvii, 339. ---- ----, ----, _D. Olmsted_, xxvii, 417; xxix, 168. ---- ----, ----, seen in California, xxxii, 195. ---- ----, of November, 1835, _D. Olmsted_, xxx, 375. ---- ----, ----, Cape of Good Hope, _J. F. W. Herschel_, xxx, 374. ---- ----, of November, 1836, _D. Olmsted_, xxxi, 386. ---- ----, ----, at Hingham, Mass., _J. L. Russel_, xxxii, 392. ---- ----, ----, foreign accounts of, xxxii, 181. ---- ----, of August, 1837, _E. C. Herrick_, xxxiii, 176, 354, 401; xxxiv, 180. ---- ----, ----, _G. C. Schaeffer_, xxxiii, 133. ---- ----, of November, 1837, _D. Olmsted_, xxxiii, 379. ---- ----, of April, 1838, _E. C. Herrick_, xxxiv, 398. ---- ----, of August, 1838, _E. C. Herrick_, xxxv, 167. ---- ----, of November, 1838, _D. Olmsted_, xxxv, 368. ---- ----, ----, _E. C. Herrick_, xxxv, 362. ---- ----, ----, at Cambridge, Mass., _J. Lovering_, xxxv, 323. ---- ----, ----, in Europe, xxxvi, 179. ---- ----, of December, 1838, _E. C. Herrick_, xxxv, 361; xxxvi, 355; xlii, 398. ---- ----, ----, in Europe, xli, 403; xlii, 398. ---- ----, of April, 1839, _E. C. Herrick_, xxxvi, 361. ---- ----, of August, 1839, _E. C. Herrick_, xxxvii, 325; xxxviii, 203. ---- ----, ----, at Canton, China, _P. Parker_, xxxviii, 301. ---- ----, of October, 1839, _E. C. Herrick_, xxxviii, 377. ---- ----, of November and December, 1839, _E. C. Herrick_, xxxviii, 377. ---- ----, of November, 1839, _D. Olmsted_, xl, 202. ---- ----, of August, 1840, _E. C. Herrick_, xxxix, 328, 332; xl, 201. ---- ----, of November, 1840, nothing unusual, _D. Olmsted_, xl, 202. ---- ----, of October and December, 1840, _E. C. Herrick_, xl, 203. ---- ----, of April, 1841, _E. C. Herrick_, xlii, 397. ---- ----, of August, 1841, _E. C. Herrick_, xli, 399; xlii, 202. ---- ----, of August and November, abstract of _S. C. Walker's_ paper on, xlii, 401. ---- ----, of November, 1841, xliii, 399. ---- ----, of April, 1842, _E. C. Herrick_, xliii, 212. ---- ----, of August, 1842, _E. C. Herrick_, xliii, 377; xliv, 208. ---- ----, of August 22, 1842, seen in the day time, at Winchester, Va., _C. Chase_, xliv, 418. ---- ----, of November, 1842, _E. C. Herrick_, xliv, 209. ---- ----, of December, 1842, _E. C. Herrick_, xliv, 210. ---- ----, of April, 1843, _E. C. Herrick_, xlv, 230. ---- ----, of August, 1844, _E. C. Herrick_, xlviii, 316. ---- ----, ----, _S. R. Williams_, xlviii, 320. ---- ----, see farther under _Meteor_.

---- ----, attributed to Auroral vapor, xx, 153. ---- ----, _Arago_, hypothesis of a zone of asteroids revolving about the sun, xxxiii, 363. ---- ----, ----, origin of, beyond the atmosphere, xxx, 373. ---- ----, _Bache, A. D._, on the non-occurrence of a shower of meteors, Nov. 13, 1834, xxvii, 335; xxviii, 305; xxix, 383. ---- ----, _Benzenberg, J. F._, and _Brandes, H. W._, made the first observations relative to the distances, velocities, &c., xxxv, 366. ---- ----, _Brandes, H. W._, investigation of, xv, 168; xxviii, 97; xxxv, 231, 232, 366. ---- ----, ----, number, duration, course of, &c., xv, 168; xxviii, 97; xxxiii, 361. ---- ----, ----, mode of calculation respecting, xxviii, 98.^f ---- ----, ----, table of, calculated, xxviii, 101. ---- ----, _Clarke, W. A._, on the origin of, xxx, 369. ---- ----, _Erman_, origin of, cosmical, xl, 53. ---- ----, ----, motion and mode of revolution, xl, 53. ---- ----, ----, velocity, perihelion distances, position, xl, 53, 54. ---- ----, _Fisher, F. G._, origin of, atmospheric, and connected with electricity, xxviii, 289. ---- ----, _Gruithuisen_, origin of, beyond the earth's atmosphere, from metallic vapors, xxviii, 290. ---- ----, _Halley, E._, suggested the determination of longitude by means of, xlii, 399. ---- ----, _Herrick, E. C._, on the number of showers of, in a year, xxxiii, 360; xxxv, 366; xxxix, 334. ---- ----, ----, facts establishing the August period, xxxiii, 177, 354. ---- ----, ----, observations on the August period, in early times, xxxvii, 337; --in 1800, 1815, 1819, 1822, 1836, xxxvii, 335, 336; --in 1837, xxxiii, 176, 354, 401; xxxiv, 180; --1838, xxxv, 167; --1839, xxxvii, 325; xxxviii, 203; --1840, xxxix, 328, 332; xl, 201; --1841, xli, 399; xlii, 202; --1842, xliii, 377; xliv, 208; --1844, xlviii, 316. ---- ----, ----, characteristics of the August shower, xxxiii, 359; xxxix, 330. ---- ----, ----, cycle of the November shower, xxxv, 367; xl, 365. ---- ----, ----, return of the November shower probable in 1867, xl, 365. ---- ----, ----, observations on the November showers, of former periods, xl, 363; --in 1838, xxxv, 362; --in 1839, xxxviii, 377; --1842, xliv, 209. ---- ----, ----, notices of observations in December, 1692, xlii, 400; --1809, xxxvi, 357; --1824, xxxvi, 357; --in 1838, xxxv, 361, 365; xxxvi, 355; xlii, 398; --in 1839, xxxviii, 377; --in 1840, xl, 203; --1842, xliv, 210. ---- ----, ----, cycle of the April shower, xxxv, 367; xl, 365. ---- ----, ----, observations on April showers, of former periods, xxxvi, 361; --in 1803, xxxvi, 358; --1838, xxxiv, 398; --1839, xxxvi, 361; --1841, xlii, 397; --1842, xliii, 212; --1843, xlv, 230. ---- ----, ----, notices of observations in June, xxxix, 334; xlii, 201. ---- ----, ----, notices of observations in October, 1839, xxxviii, 377; --1840, xl, 203. ---- ----, ----, notices of observations in January, xxxix, 334. ---- ----, ----, remarks on the zone-theory of, xxxiii, 363; xxxv, 367. ---- ----, ----, on the supposed connexion of, with the Zodiacal light, xxxiii, 364; xxxv, 368; xxxix, 331. ---- ----, ----, nature, motions and distance of, xxxiii, 360; xxxv, 366. ---- ----, ----, average daily number, xxxiii, 362. ---- ----, ----, average hourly number, xxxiii, 362; xxxv, 365. ---- ----, ----, apparent sizes, colors, &c., xxxiii, 360; xxxix, 330. ---- ----, ----, hour of maximum in August, xxxix, 330. ---- ----, ----, radiant point, xxxvii, 328; xxxix, 330. ---- ----, _Hitchcock, E._, magnetic or Auroral origin of, suggested, xxv, 355. ---- ----, ----, observations in November, 1833, xxv, 354. ---- ----, _Ideler, J. L._, conclusions as to the atmospheric origin (vegetable and animal) of, xxviii, 289. ---- ----, _Laplace, P. S._, remark as to the prevailing ignorance on, xxviii, 59. ---- ----, _Loomis, E._, on the sizes, heights, paths, course and velocities of, xxviii, 95; xxxv, 231. ---- ----, ----, apparent direction of, dependent on the motion of the earth, xxviii, 104. ---- ----, ----, on the course, velocity, height and size of the meteor of May 18, 1838, mathematically calculated, xxxv, 223. ---- ----, _Lynn, G._, first laid down a method for determining longitude by, xlii, 399. ---- ----, _Maskelyne, N._, on determining longitude by, xlii, 399; xliv, 374. ---- ----, _Messier_, on some meteors seen crossing the sun's disk, June, 1777, xxxiii, 364. ---- ----, _Olmsted, D._, on the November shower of 1833, xxv, 363; xxvi, 132^f; xxix, 376. ---- ----, ----, notices of observations on, in November, 1832, xxvi, 136; --1834, xxvii, 417, xxix, 168; --1835, xxx, 374; --1836, xxxi, 386; --1837, xxxiii, 379; --1838, xxxv, 368; --1840, xl, 202. ---- ----, ----, November period continued in 1837, xxxiii, 379. ---- ----, ----, November period passed, in 1838, xl, 202. ---- ----, ----, ibid, length of, and cycle, xl, 203. ---- ----, ----, ibid, time of maximum number and duration of shower in, xxv, 386, 402; xxvi, 141; xxxiii, 381. ---- ----, ----, ibid, whole number, xxv, 389. ---- ----, ----, ibid, height, course of, and direction, xxv, 392, 393; xxvi, 144; xxxiii, 381. ---- ----, ----, ibid, sound from, xxv, 392, 404. ---- ----, ----, ibid, apparent origin and radiation, xxv, 394, 405; xxxiii, 386, 390. ---- ----, ----, ibid, velocity, xxvi, 147^f, 149; xxxiii, 383. ---- ----, ----, ibid, size, xxv, 408; xxvi, 155; xxxiii, 382. ---- ----, ----, ibid, matter supposed to have come from, xxv, 396, 408. ---- ----, ----, ibid, Auroral appearances attending, xxv, 397, 410. ---- ----, ----, ibid, concurrent phenomena, xxv, 398, 401; xxvi, 160. ---- ----, ----, ibid, electrical and magnetic phenomena accompanying, xxv, 396, 409. ---- ----, ----, origin of, beyond the atmosphere, xxvi, 140; xxix, 377. ---- ----, ----, combustible nature of, and other characters, xxvi, 151, 161; xxix, 377. ---- ----, ----, relation to the solar system, and orbital motion of supposed shooting star nebula, xxvi, 163^f; xxix, 377. ---- ----, ----, connection with Zodiacal light, xxvi, 172; xxix, 378; xxxiii, 390.^f ---- ----, ----, remarks in reply to objections to his theory of, xxix, 380; xxx, 370.^f ---- ----, _Quetelet_, report of desultory remarks at the British Association of 1833, xxviii, 59. ---- ----, ----, general average per hour, xxxv, 365. ---- ----, _Twining, A. C._, on the meteors of November, 1833, xxvi, 320^f;--1834, xxvii, 339. ---- ----, ----, examination of D. Olmsted's views on, xxvi, 321. ---- ----, ----, time and maximum of shower, November, 1833, xxvi, 323. ---- ----, ----, the radiant point fixed independent of the earth's rotation, xxvi, 325, 347; xxvii, 339. ---- ----, ----, nature and cause of, xxvi, 335. ---- ----, ----, height of several calculated, xxvi, 337.^f ---- ----, ----, velocity of, xxvi, 346. ---- ----, ----, character of orbital motion and period of, xxvi, 348, 349. ---- ----, ----, _Walker, S. C_., on the showers of, in August, xl, 51; xlii, 401. ---- ----, ----, ibid, radiant point and other observations, xl, 51.

_Shortrede, R._, logarithmic tables of, noticed, xlviii, 208.

Shower of red matter like blood in Tennessee, a hoax, xliv, 216, (see xli, 403.)

Siamese twins, an account of, _J. C. Warren_, xvii, 212.^f

_Sibbald, R._, notice of, with an enumeration of his works, xxxvii, 138.

Siberia, steppes, xvii, 23. ----, depth of the frozen ground in, xxxvi, 210. ----, temperature of the ground in, xxxvi, 205. ----, notice of Humboldt's expedition to, xvii, 405.

Siberian elm, notice of, xx, 377.

_Sibley, J._, fact from a letter by, relating to the Texas meteoric iron, viii, 221.

Sicily, earthquakes of 1823, ix, 216. ----, geological structure of, _F. Ferrara_, viii, 201. ----, marbles of, viii, 203. ----, minerals of, viii, 203. ----, geology of, _C. Daubeny_, x, 230.^f ----, volcanic character of, xiii, 272. ----, fountain of Cyana in, xxvii, 82.

Sida abutilon, affording a material for cordage, xxi, 37.

Sidero-graphite, _J. Torrey_, ii, 176, 370.

Sideroscope, xv, 177.

_Siebold's_ Flora Japonica, noticed, xxxix, 175.

Sienite, see _Syenite_.

Sigillaria, generic characters, vii, 180. ---- marineria, xxxi, 30.^f ---- in the coal fields near Liverpool, xlv, 403. ----, remarks on the relation of, to Stigmariæ, xlix, 227.

Signals, iii, 382. ----, telegraphic, by rockets, v, 189.

Signs, observations on the language of, viii, 348.

Silene axillaris, vii, 62. ---- regia, xi, 182.

Silex, fusion of, ii, 292. ----, solubility of, xiv, 385; xli, 60. ----, gelatinous, _Guillemin_, xiv, 391. ----, in solution, in geodes, viii, 282. ----, ----, ibid, _G. Bischof_, xlix, 396. ----, hydrate of, xv, 390. ---- in plants, xxxiv, 27.

Siliceous buhr millstone deposits of Ohio, xxix, 142. ---- ----, hot water origin, xxix, 45. ---- minerals, on the treatment of, by carbonated alkalies, xviii, 404. ---- ----, solution of, by steam, xlviii, 397. ---- glass from burning hay, xix, 395; xxiv, 174. ---- corals, i, 141. ---- shells, corals and wood of Antigua, _S. Hovey_, xxxv, 79; --due to siliceous solutions, 82. ---- Sinter of the Azores, _J. W. Webster_, iii, 391. ---- springs and deposits in India, _Newbold_, xlix, 398. ---- substances, porosity of, vii, 192. ---- ----, containing siliceous infusoria and minute organic remains, _Turpin_, xxxii, 400.

Silicic acid, see _Silex_. ---- ether, _Ebelman_, xlix, 192.

Silicification of fossils, proceeding from thermal springs in Florida, _C. U. Shepard_, xxv, 165. ---- of wood, xxxiii, 108. ----, remarks on, _J. D. Dana_, xlviii, 88, 397; xlix, 227.

Silicified wood, see _Fossil_.

Silicon, how obtained, ix, 377. ----, a process for obtaining, _R. Hare_, xxii, 189; xxiv, 247^f; xl, 28. ----, production of, from paracyanogen, _S. M. Brown_, xli, 208. ----, on the alleged conversion of carbon into, xlii, 193.

Silk, on the manufacture of, in America, xviii, 382; xix, 175. ----, review of F. Pascalis on the culture of, xvii, 202; xviii, 278. ----, practical instruction concerning, xviii, 207, 278. ----, on the culture of, in India, xl, 39. ----, grown at Nottingham, England, xxxviii, 130.

Silk-worm, amount of silk from one, viii, 391. ----, new, xxxiii, 206.

_Silliman, B._, geological notices of New Haven and Litchfield Cos., Conn., ii, 201. ----, on prussic acid, ii, 81. ----, experiments with the gas blowpipe, ii, 282; iii, 89; vi, 349. ----, on an argentiferous galena from Huntington, Ct., and miscellaneous observations on lead ores, iii, 173. ----, circumstances connected with the formation of ice on still waters, iii, 179. ----, progress of American science, v, 197; xliii, 224. ----, tempest of Sept. 3, 1821, iv, 171. ----, natural ice-houses, iv, 174. ----, conversion of cannon balls into plumbago, iv, 179. ----, yellow oxide of tungsten, iv, 187. ----, fusion of charcoal, graphite, anthracite, &c. with the deflagrator, v, 108, 361; vi, 341, 378; x, 109, 119. ----, ---- ibid, with the compound blowpipe, vi, 349. ----, relations between the calorimotor and deflagrator, and other galvanic batteries, vi, 337. ----, application of fluor to etching glass, vi, 354. ----, on the cutting of steel by soft iron, vii, 342. ----, on the economical use of the anthracite of Pennsylvania, x, 331. ----, ---- ---- of R. Island, xi, 78. ----, on the igneous origin of some trap rocks, xvii, 119. ----, on the anthracite region in the Lackawanna and Wyoming valleys, xviii, 308.^f ----, notes on Mauch Chunk and other anthracite regions of Pennsylvania, xix, 1. ----, on the safety of steamboats, xix, 143. ----, notice of a fountain of petrolium, or oil spring, of Allegany Co., N. Y., xxiii, 97. ----, on the gold mines and region of Virginia, xxxii, 98. ----, experiments on different varieties of gold rock, xxxii, 105. ----, chemical examination of the coal of Chesterfield Co., Va., xlii, 369. ----, remarks on Phrenology, xxxix, 67. ----, remarks on ancient mounds, xliii, 152. ----, Address before the Assoc. Amer. Geol., 1841, xli, 187;--1842, xliii, 217. ----, review of Mantell's Medals of Creation, xlviii, 105. ----, work on Chemistry by, noticed, xix, 343; xx, 96. ----, comparison of British and American Journals of Science in 1834, xxvi, 174.

_Silliman, B., Jr._, on the electrotype, xl, 157.^f ----, analysis of the alluvium of the Nile, xl, 190. ----, rhombic structure of Connecticut sandstone, xli, 173. ----, soil of the Nile, xli, 160. ----, a daguerrotype experiment by galvanic light, xliii, 185. ----, use of carbon in Grove's battery, xliii, 393. ----, account of a carbon battery, xliv, 180.^f ----, scratches on rocks of Connecticut, xlv, 333. ----, review of Dana's Mineralogy, xlvi, 362.^f ----, analysis of Haydenite, xlvi, 379. ----, on meteoric iron from Otsego Co., N. Y., xlvi, 401. ----, on the trap and sandstone of Connecticut, xlvii, 107. ----, natural polariscope, xlvii, 418. ----, analysis of waters of the Dead Sea, xlviii, 10. ----, analysis of the mud of New Haven harbor, xlviii, 337. ----, reply to C. U. Shepard on a notice of his Mineralogy, xlviii, 179. ----, notice of meteoric iron from Cambria, near Lockport, N. Y., xlviii, 388.^f

_Silliman, B. D._, experiments on topaz, x, 352. ----, notice of an Aurora, xiv, 91.

Sillimanite, named, described and analyzed by _G. T. Bowen_, viii, 113. ----, notice of, viii, 195. ----, compared crystallographically with Kyanite, _C. U. Shepard_, xii, 59.^f ----, crystal of, with analyses, xlvi, 381.^f ----, analysis of, xlviii, 219. ----, analysis by _T. Thomson_, xlix, 396. ----, locality of, and of monazite, in Westchester Co., N. Y., xlvi, 207.

Silphium, v, 301.

Silurian or transition system, xxxv, 243. ---- ---- ----, _R. I. Murchison_ on, noticed, xxxvi, 399; xxxvii, 219; xliv, 193. ---- system of England and Europe, xxxvii, 219. ---- rocks of Denbigshire, _J. E. Bowman_, xlii, 325. ---- ---- of New York, xl, 77. ---- system, and its characteristic fossils, _T. A. Conrad_, xxxviii, 86. ---- ----, ibid, _H. D. Rogers_, xlvii, 145. ---- fossils, in Indiana, xlvi, 296.

Silver, atomic weight of, xlvii, 189. ----, effect of terrestrial magnetism on the precipitation of, xvi, 262. ----, Gregory's method of obtaining, from the chloride, xlvi, 201. ----, reduction of the chloride of, xxviii, 145. ----, production of the discolored chloride of, _Cavalier_, xx, 193; xxi, 369. ----, chloride of, on the change of color, xx, 193; xxi, 369. ----, fulminating, accidents from, i, 169; xxii, 185. ----, ----, xviii, 335. ----, ----, of Berthollet, xviii, 155. ----, ----, _Mitscherlich's_ mode of preparation, xix, 379. ----, on some of the substances which may be used in forming a metallic mirror by the precipitation of the oxide of, xlix, 398. ----, hyperoxide of, xlix, 194, 391. ----, purple precipitate of, xxii, 198. ----, German, made by _Frick_, xiii, 172. ----, imitation, xxiii, 195. ----, preparation of pure nitrate of, v, 348; xxiv, 370. ----, nitrate of, reduced by remaining in a pasteboard box, xviii, 400. ----, ----, pure, not blackened by sun's rays, xxxv, 298. ----, native, at Huntington, Conn., vi, 230. ----, ----, in New Jersey, v, 401. ----, ----, of Davidson Co., N. C., xli, 183, 349. ----, ----, in Michigan, Lake Superior, xli, 185; xlix, 81. ---- of Lane's mine, analysis of, _W. W. Mather_, xxvii, 256. ----, in the Southampton lead mines, Mass., xxii, 63. ----, fruitless search for, in Ohio, xxv, 224. ---- ores, reduction of, _W. W. Mather_, xxiv, 218. ----, yield of Russian mines of, xxi, 372. ---- mines of Nertchinsk, xvii, 34. ---- ---- of the Hartz, xix, 113. ---- ---- of Peru and Chili, xvii, 43. ---- ----, ----, Pasco, S. America, sketch of, _De Rivero_, xvii, 43.^f ---- ---- ----, Tarapaca, xliv, 8. ---- ---- of Mexico and South America, xxiv, 213, 226. ---- ---- of Davidson Co., North Carolina, xli, 183, 348. ----, sulphuret of, in New York, i, 237. ---- ore, red, analysis of, v, 377. ---- paper, mode of imitating, xix, 189.

Silvering copper, xxiii, 386. ---- glass, Drayton's method, xlix, 198. ---- iron, xxx, 169.

_Simond, L._, notice of, xxiii, 371.

Sines and cosines of the sum and difference of two arcs, formulæ for, _T. Strong_, i, 424.^f ----, rational expression for, _D. Gould_, xxii, 392.

Singapore, climate and productions of, _J. S. Travelli_, xliv, 151.

Siren, notice of genus and species, _D. H. Barnes_, xi, 281.

Sismondine, analysis and description of, _A. Delesse_, xlvii, 217.

Sium tricuspidatum, xi, 175.

Sivatherium, xxxi, 170; xxxiii, 104.

Size for artists, receipt for, xxi, 168. ----, new, for the chain of woven cloth, xxii, 366. ---- for cotton or linen, preparation of, xxii, 367.

Skeleton, human, of Guadaloupe, _J. Moultrie_, xxxii, 361. ----, ----, ancient in Ohio, ii, 242. ----, preservation of, xix, 57.

_Skene, J._, on the emigration of a colony of caterpillars, ix, 284.^f ----, graduation of thermometers, xii, 397.

_Skidmore, T._, formation of flexible elastic lubes, v, 153.

Skins, preservation of, xi, 397. ----, ----, see farther under _Preservation_.

Skugisan, xxvi, 388.

Skull found in a tree, iv, 377. ----, of Guadaloupe human skeleton, _J. Moultrie_, xxxii, 361.

Skulls, singular variety of, from Peru and Bolivia, xxviii, 78. ----, American, observations on, _J. C. Warren_, xxxiv, 47. ----, ----, _S. G. Morton_ on, xxxviii, 341.^f ----, _S. G. Morton's_ collection of, xxi, 197. ----, proposed new work on, by _S. G. Morton_, xxxii, 207. ----, ---- ----, reviewed, xxxviii, 341.^f

Skunk, American, iv, 391.

Sky, on the cause of the blue appearance of, _B. Hallowell_, xv, 360. ----, ibid, xxvi, 65.

Slates, artificial, in Russia, vii, 191.

Slate, roof, in western Massachusetts, viii, 19, 20. ----, ----, in Worcester Co., Mass., xxii, 34. ----, fused to hornstone, xxxiv, 73.

Sleep of plants, xxii, 375.

Slide of Alpnach, xxiv, 124. ---- in Essex Mountains, _W. C. Redfield_, xxxiii, 313. ---- from Mount Pilatus to the Lake of Lucerne, iii, 368. ---- and avalanches in the White and Green Mountains, xv, 217.

Small pox, nature of the virus of, xix, 389. ---- ----, _F. Pascalis's_ theory of its origin, x, 208. ---- ----, on the increase, xxxviii, 134. ---- ----, power of new virus, xxxviii, 134.

Smilax grandifolia, xlv, 171.

_Smith, Al._, Connecticut valley, water courses and geology of, xxii, 205.^f ----, ---- ----, terraces of, xxii, 214. ----, ---- ----, ancient lakes, xxii, 216. ----, ---- ----, greenstone, xxii, 224.

_Smith, Az._, electricity in machines, xxxix, 134. ----, ruins of Nineveh, xlix, 113.

_Smith, D. B._, Principle of Chemistry, by, noticed, xlvii, 414.

_Smith, E. D._, effects of earthquakes of 1811-12, i, 93. ----, Warm springs in Buncombe Co., North Carolina, iii, 117. ----, analysis of the Harrodsburg salt, i, 403. ----, application of medico-chemistry to calculous affections, iii, 300.

_Smith, F. L._, on the gold deposits of a portion of North Carolina, xxxii, 130.

_Smith, H._, letter to B. Silliman, xxxv, 336.

_Smith, H. L._, on some nebulæ, xl, 37. ----, discovery of a comet, xlvii, 419.