Museums of Natural History, when established in England, xxxvii, 143. Mushrooms, gas from, xvii, 174. Musical intervals, _J. Farey_, ii, 65. ---- temperament, essay on, _A. M. Fisher_, i, 9^f, 176.^f ---- tones produced by magnets, _C. G. Page_, xxxii, 396; xxxiii, 118; xlviii, 401. Muskets, manufacture of, by _E. Whitney_, xxi, 237. Mylocarium ligustrinum, xxvi, 319. Mylodon, _R. Owen_, xliv, 341. ----, _R. Harlan_, xliii, 141; xlv, 209. ----, in Georgia, xlvii, 258. ----, in Oregon, (?) xlii, 136. Myology of the human body, works on, noticed, iv, 198; xviii, 203. Myosotis inflexa, xlvi, 98. ---- macrosperma, xlvi, 98. ---- stricta, xlvi, 98. ---- verna, xlvi, 97. Myosurus Shortii, i, 379. Myrica carifera, analysis of, i, 294. Myrrhis canadensis, xi, 175. ---- longistylis, xi, 175. Mystery, on, _M. Hopkins_, xiii, 217. N. Naiades, see under Zoology, _Mollusca_. Nantucket, Philosophical Institute of, xii, 173. Naphtha springs in old Assyria, xxxvii, 353. ---- ---- of Persia, xxxvii, 354. ---- in quartz crystal, _C. Dewey_, i, 345. _Napier, J._, on the solubility of the metals in the salts of iron, xlviii, 190. Naples, surgery in, v, 179. Napoleon, literary taste of, xii, 390. Napoleon's library, xii, 390. Narceine, a new substance, _Pelletier_, xxiii, 379. Narcotine, results of experiments on, _W. Tully_, xxi, 39. ----, products of the decomposition of, _F. Wöhler_, xlix, 205, 206. _Nash, A._, lead mines and geology of Hampshire Co., Mass., xii, 238.^f ----, fascination of snakes, xii, 368. Nasmyth's pneumatic speculum, xxxviii, 107. Native metals, see under the names of the metals. Natrolite in New Jersey, xl, 71. Natural bridge, i, 66. Natural History Society, see _Society_. ---- magic, remarks on, xxxiii, 258. Naturalist, Journal of a, noticed, xxi, 390. Naturalists, some notice of British, _C. Fox_, xxxvi, 217. Nautilus, fossil, xliii, 187. Naval Sketches, by _G. Jones_, noticed, xvi, 168, 320^f; xvii, 201. ---- Lyceum, xxvii, 390. Navigation, submarine, ii, 94. ---- on canals, mode of, vii, 190. ---- of rapids, vii, 175. ---- of Cape Horn, _M. F. Maury_, xxvi, 54. ---- of the Atlantic, by ship Savannah by steam in 1819, xxxviii, 155. ---- ----, ---- ----, log book of, deposited with the American Philosophical Society, xl, 34. ----, letters of _J. Smith_ on, xxxv, 160, 332; xxxvi, 133. ---- to the Pacific by steam, xli, 358. ----, in the Pacific, on the coast of Chili, xliii, 207. ----, steam, see _Steam_. ----, on the application of the hydrostatic and aerostatic powers to aquatic, _E. C. Genet_, xi, 344.^f ----, solution of a problem in, _W. Chauvenet_, xlvi, 79. ----, Treatise on, _M. F. Maury's_, noticed, xxxii, 208. Navigator, _N. Bowditch's_, noticed, xxxv, 11. Navigators, directions to, if overtaken by storms in different seas, _W. C. Redfield_, xxv, 119, 120. ----, ibid, _H. W. Dové_, xliv, 338.