Alcohol, density in different states, xvi, 388. ----, on the colored flame of, xvi, 390. ----, observations on, by _A. Eaton_, xvi, 173. ----, detection of adulterated, xix, 71. ----, rectification of, ii, 358. ----, rectified without heat, x, 378. ----, proportion of, in wines and various fermented liquors, _L. C. Beck_, xxviii, 48. ----, combination with oil of turpentine, viii, 390. ----, action of, on alkalies, xl, 216. ----, action of chloride of lime on, xxiii, 134. ----, action of sulphuric acid on, xvi, 267. ---- mixed with water, changes in the volume of, xxiv, 373. ---- in bread, xxiii, 194. ---- not in bread, xxvi, 211. Alcyonium, in green sand, Maryland, xvii, 288. _Alden, T._, account of descents in a diving bell at Portsmouth, N. H., xxii, 325. _Alder, J._, notice of, xxxvii, 168. _Aldini_, on the preservation of firemen from the action of flame, by asbestus cloth and other means, xx, 96.^f _Aldridge_, on vegetable impregnation, xli, 62. Alembic for distilling amalgam of gold, _M. F. Maury_, xxxiii, 66.^f _Alexander, J. H._, new form of barometer, xlv, 233.^f Algebraic series, _J. Wallace_, vii, 278. ---- ----, remarks on, viii, 131. ---- ----, reply by _J. Wallace_, ix, 98. ---- ----, reply to _J. Wallace_, ix, 293. ---- solutions, by _C. Wilder_, xvi, 271. _Alger, F._, Beaumontite and Lincolnite identical with Heulandite, xlvi, 233.^f ----, mineralogy of Nova Scotia, xii, 227; xiv, 305; xv, 132, 201. ----, minerals of New Holland, xxxix, 157.^f ----, zinc mines of Franklin, New Jersey, xlviii, 252. ----, mineralogy of, reviewed, xlvii, 333. Alkalies, bases of, discovered, by _Davy_, xvii, 228. Alkanet, a substitute for litmus or turmeric, _R. Hare_, v, 348. _Allan, J._, on coins and medals, with a notice of the New Haven medal, xxxvii, 285. Allanite, analysis of, xxviii, 394. ----, of Monroe, N. Y., analysis of, xlvi, 37. ----, in New York, xl, 76. _Allen, J. A._, supposed traces of a volcano about West River Mountain, Vermont, iii, 73. ----, luminous appearances in the atmosphere, iv, 341. _Allen, W._, on the curves of tri-section, iv, 343. _Allen, Z._, volume of the Niagara river, xlvi, 67.^f _Allinson, S. Jr._, on the atomic weight of mercury, xvi, 183. Allomorphite, xlii, 386. Allotropism of chlorine, _J. W. Draper_, xlix, 346.^f Alloxan and Alloxantine, preparation of, _W. Gregory_, xli, 54. Alloy of tin and antimony, action of, with nitric and muriatic acids, xlix, 206. Alluvial district (tertiary and cretaceous) of New Jersey, vi, 237. ---- deposits at Malbay, L. C., v, 221. ---- ---- of the Mohawk, xxiii, 207. Alluvium of the Connecticut valley, vi, 80, 83. Alluvium of the valley of the Muskingum, xxix, 9. Almonds, bitter, amygdaline in, xix, 384. Aloes, medicinal effects, xxiv, 274. Alpaca and Alpaca wool, remarks on, xli, 63. Alphabet, proposed change in the English, xxxix, 197; xlvii, 420.