Molybdenite, analysis of, _H. Seybert_, iv, 320. ----, in Connecticut, i, 242; vi, 235; viii, 194. ----, in Maine, x, 17. ----, in Maryland, xxvii, 20. ----, in Massachusetts, i, 238; v, 268; vi, 235; vii, 58; viii, 58; ix, 55; xiv, 217; xxxiii, 400. ----, in New Jersey, v, 401. ----, in New York, vii, 57. ----, in Pennsylvania, v, 41. ----, in Rhode Island, viii, 231. Monarda allophylla, iv, 56. ----, Bradburiana, x, 260. ----, scabra, x, 260. Money cowry, xxxii, 250. Monophane, xxvi, 388. _Montague, G._, notice of, xxxvii, 162. Monsoons, remarks on, _W. C. Redfield_, xxv, 124. ----, character and causes of, _W. C. Redfield_, xxxiii, 63. Monte Video, Connecticut, scenery of, vii, 5. ----, in South America, xxix, 240. Monticellite, xxvi, 388. _Montlosier, Count_, notice of, xxxvii, 121. Monuments, public, in the United States, xviii, 229. Monument to Copernicus, in Warsaw, iv, 387. ---- of Pultowa, iii, 379. ---- to Cuvier, xxiii, 309. Monumental inscriptions, on the writing of, xvii, 271. Moodus noises at East Haddam, Ct., xxix, 364; xxxix, 336. Moon, volcanoes of, v, 176; xxxv, 305. ----, action of, on the atmosphere, deductions respecting, xv, 174. ----, influence of, on the weather, _F. Marcel_, xxvii, 192. ----, heat in rays of, ii, 329; xl, 315. ----, singular appearance of, xxii, 375. ----, halo, West Point, xx, 299. Moon's mean motion, secular acceleration of, _J. H. Coffin_, xlvii, 324.^f _Moore, N. F._, ancient mineralogy, notice of, xxviii, 188. Morbid animal products, chemical examination of, _J. F. Dana_, iv, 149. _Mordecai, A._, experiments on gunpowder, xlix, 180. _Morey, S._, on artificial mineral waters, iii, 94. ----, on heat and light, ii, 118, 122. ----, bubbles blown in melted rosin, ii, 179. ----, on the patent water-burner, vii, 141. ----, revolving steam engine, i, 157.^f ----, observations on combustion, xxv, 146. ----, explosive engine, xi, 104. Morey's steam engine, _J. Doolittle_, ii, 101.^f ---- ---- ----, _Sullivan_, ii, 106.^f _Morgan, H. K. G._, galvanic means of blasting, xxxviii, 33. _Morin, P. E._, laws of meteorological phenomena, xl, 402. ---- solicits meteoric information from America, xlii, 202. ----, theory of the universe, xxxi, 160. Morphine, preparation of, xvii, 384; xxiii, 190. ----, and its salts, new method for, xli, 51. ----, test for, viii, 381. ----, action of, with iodic acid, xx, 184. ----, sulphate of, results of experiments on, _W. Tully_, xxi, 39. _Morris, Miss M. H._, on the Hessian fly, xl, 381. _Morse, S. F. B._, account of the twilight bow, xxxviii, 389. ---- electro-magnetic telegraph, xxxiii, 185.^f ----, two electrical currents over the same conductor without interference, xliv, 418.^f ----, experiments with Grove's battery, xlv, 390.^f Mortality, observations on bills of, _J. Mease_, xli, 306. ---- of infants in France, xix, 192. ----, effect of ventilation on, xxvii, 79.