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.