_Schröder, J. F._, address by, noticed, xxi, 181.
_Schweigger-Seidel_, general electric formula, xxxv, 356.^f
_Schweinitz, L. D. de_, monograph of the genus Viola, v, 48. ----, list of the rarer plants near Easton, Penn., viii, 267. ----, obituary notice of, xxvi, 218.
_Schweitzer, G._, analysis of seawater near Brighton, xxxviii, 12.
Science, list of men of, who have held offices under government, xx, 172. ---- in the South, xxi, 188. ---- in the West, xxi, 187.
Scientific publications, recent, in the United Stales, xxvi, 208, 397; xxvii, 395. ---- Journals in Great Britain, xxviii, 365.
Sclerotic bones of the eyes of birds and reptiles, xxxiii, 289.
_Scoresby, W._, magnetical investigations, xlviii, 33. ----, improvements by, in magnetic apparatus, xxxiv, 398.
Scott spring, Virginia, analysis of, xliv, 409.
Scratches, diluvial, caused by ice, according to _L. Agassiz's_ theory, xlii, 350. ----, ----, theory of, _E. Hitchcock_, xli, 255. ----, ----, in the United States, xli, 174. ----, ----, ----, belong to two systems, _W. C. Redfield_, xlv, 333. ----, ---- ----, on rocks, a few localities of, xvii, 408. ----, ----, in Maine, _C. T. Jackson_, xxxvi, 153. ----, ----, in New Hampshire, _O. P. Hubbard_, xxxiv, 107. ----, ----, ----, _C. T. Jackson_, xlv, 146. ----, ----, ----, on the rocks at Hebron, xxii, 166. ----, ----, in western New York, _G. E. Hayes_, xxxv, 191. ----, ----, ----, xxxvi, 39. ----, ----, ibid, _C. Dewey_, xliv, 146. ----, ----, on the rocks near New York city, _J. E. Dekay_, xvi, 357. ----, ----, on the rocks, in Sullivan Co., N. Y., _W. A. Thompson_, xxiii, 243. ----, ----, in Pennsylvania, _H. D. Rogers_, xliii, 180. ----, ----, in Ohio, (?) at Sandusky Bay, vi, 179. ----, ----, in Indiana, _J. T. Plummer_, xliv, 296. ----, ----, in the rocks of the Allegany range, xx, 124.
Screws, manufacture of, in Connecticut, ii, 208.
_Scrope, G. P._, on Volcanoes, review of, xiii, 106. ----, letter to the editor on volcanoes in North America, xiii, 190. ----, descriptive arrangement of volcanic rocks, xv, 28.
Sea and land, relative level of, as regards the tides, xxxi, 335. ----, waves, currents and tides, v, 131. ----, ----, ----, see farther under _Ocean_. ----, depth of, v, 130. ----, ----, not determinable by the echo, _C. Bonnycastle_, xxxviii, 161. ----, deep soundings in, by the French ship Venus, xl, 407. ----, encroachments of, near New York, xxxvi, 16. ----, action of, xxi, 21. ---- and land breezes, causes of, _W. C. Redfield_, xxxiii, 65. ----, remarkable agitations of, at the Sandwich Islands, _T. C. B. Rooke_, xxxvii, 358. ----, Dead, level of, xl, 213; xlii, 214. ----, ----, analysis of the waters of, xiii, 395; xlviii, 10. ----, ----, account of, _J. D. Sherwood_, xlviii, 1.