_Douglas, D._, obituary notice of, xxx, 196. _Douglass, D. B._, plants from the headwaters of the Mississippi, iv, 56. _Dové_, on the laws of storms, xliv, 315.^f ----, ---- ----, strictures on, by _R. Hare_, xliv, 137. ----, ---- ----, reply to _R. Hare's_ strictures on, by _W. C. Redfield_, xliv, 384. _Downing, A. J._, on the order Cycadeæ and the seed of Cycas revoluta, xxxii, 45.^f Draining, extensive, in Russia, v, 393. _Draper, J. W._, allotropism of chlorine, as connected with the theory of substitutions, xlix, 346.^f ----, carbonic acid and alkaline carbonates, decomposition of, by the light of the sun, xlvi, 398. ----, coins and medals, xxix, 157. ----, electricity, influence of, on capillary attraction, xxvi, 399. ----, elementary substance, change in, from exposure to the sun's rays, xlvi, 390. ----, idolatry and philosophy of the Zabians, xxviii, 201. ----, light, latent, xliv, 202. ----, tithonometer, xlvi, 217.^f Dreelite, analysis of, xxx, 380. Drift, discussion on, at the Association of American geologists and naturalists, 1842, xliii, 151. ----, _P. Dobson's_ views on the iceberg theory of, xlvi, 169. ----, _J. L. Hayes_, on the probable influence of icebergs on, xlv, 316, 326. ----, _E. Hitchcock_, theory of the U. States, xli, 248. ----, ----, singular instance in Berkshire Co., Mass., xlvii, 132; xlix, 258.^f ----, ----, influence of ice on, xlv, 324. ----, ----, copper in, Mass., xlv, 331. ----, _C. T. Jackson_, remarks on, xlv, 320. ----, _Nicollet_, remarks in opposition to the glacial theory, xlv, 323. ----, _W. C. Redfield_, influence of ice on, xlv, 325. ----, _H. D. Rogers_, remarks on, xlvii, 263. ----, ----, connection of, with earthquake vibrations, xlvii, 273. ----, see farther under _Boulders_ and _Scratches_. Drowned person, time of, under water, determined, xviii, 170. Drowning, resuscitation from, by oxygen gas, xvi, 250. Druids were Zabians, xxviii, 214. Drummond's mode of lighting light-houses by means of lime, xxi, 366. Dry rot, _G. Gibbs_, ii, 114. ---- ----, cause of, xxx, 182. ---- ----, _P. Rainey_, xxxiv, 169. ---- ----, brief strictures on an article on, in vol. xxxiv, _J. T. Plummer_, xlii, 197. Drunkenness, remedy for, iv, 385. _Ducatel, J. T._, and _J. H. Alexander_, report on the geology of Maryland, xxvii, 1. ----, experiments on potassium and sodium, xxv, 90. _Dumas, J._, on the determination of nitrogen in organic compounds, xxviii, 134. _Dumont's_ filter and prepared charcoal, xxiii, 346.^f _Duncan, H._, on the footprints of animals in sandstone in Scotland, xv, 84. _Dunn's_ Chinese collection at Philadelphia, xxxv, 391. _Durant, C. F._, improvement of the barometer, xxvii, 97.^f _Dwight, H. E._, account of the Kaatskill mountains, ii, 11. _Dwight, Benj. W._, facts illustrative of the powers and operations of the human mind in a diseased state, i, 431.