Lyceum of Natural History, New York, abstract of the proceedings of, ii, 366; vi, 361; vii, 171; viii, 192; ix, 387; x, 198; xiii, 378; xiv, 190; xv, 191, 357; xvi, 205, 354; xviii, 193; xix, 159, 353; xxvii, 148; xxviii, 189; xxxvi, 195. ---- ibid, officers of, viii, 192; xv, 193; xvi, 355; xxxii, 204; xxxvi, 195; xlviii, 404. ----, ibid, memorial of, on a geological survey of N. York, xvi, 358. ----, ibid, annals of, commenced, vii, 359;--noticed, xxxiv, 214. ----, Naval, of Brooklyn, xxvii, 390. ----, at Troy, ii, 173. Lychnopora, a new genus from S. America, notice of, ix, 375. Lycoperdon tuber, or Indian bread, ii, 369. ---- giganteum, xxxviii, 391. Lycopodites, generic characters of, vii, 180. Lycopodium, remark on the yellow powder of, xxxix, 399. ---- annotinum, xlv, 46. ---- inundatum, xlv, 47. ---- selago, xlv, 48. _Lyell, C._, medal of the Royal Society conferred on, xxx, 174. ----, address before the Geological Society of London, 1837, xxxiii, 76. ----, on the changes of climate on the earth in past times, xx, 377. ----, coal formation of Nova Scotia, and on the age and position of the gypsum, xlv, 356. ----, upright trees in the coal strata of Nova Scotia, xlv, 353. ----, on the cretaceous strata of New Jersey, xlvii, 213. ----, on the elevated beaches, and boulder formations of the Canadian lakes and valley of St. Lawrence, xlvi, 314. ----, on the elevation of Sweden, xxviii, 72, 387. ----, footprints of birds in the Connecticut valley, xlv, 394. ----, views on granite, xxxiii, 116. ----, probable age of graphite and anthracite in the mica slate at Worcester, Mass., xlvii, 214. ----, geological position of the mastodon at Big Bone Lick, Ky., and elsewhere, xlvi, 320. ----, geology of, 4th edition, notice of, xxix, 358. ----, proposed visit to the United States, xli, 403; xlii, 213. _Lyon, L._, on surveying instruments, xiv, 268.^f M. _Macaire_, vegetable physiology in relation to rotation of crops, xxiii, 138. ----, injurious action of gases on vegetation, xxiii, 193. ----, on nitrogen in animal substances, xxiii, 384. ----, experiments on hydrochloric acid, xi, 393. _McConnell, B. R._, notice of a revolving electro-magnetic instrument, xxxiii, 188. _McCord, J. S._, meteorological observations at Montreal, 1836-40, xli, 330. _MacCulloch, J._, essay on remittent and intermittent fevers, xviii, 338. _McGuire, W. W._, on the prairies of Alabama, xxvi, 93;--causes of, xxvi, 96. Machine for cleaning grain invented, iv, 387. ---- and its model, relation between, _E. Sang_, xxiv, 264. Machines, examination of, maximum and minimum effect of, _A. B. Quinby_, xii, 346. ----, electrical, see _Electrical_. Machinery, use of soapstone in diminishing friction of, xiii, 192. ---- and manufactures, economy of, xxiv, 105. Macle, see _Chiastolite_.