_Deane, J._, auroral arch in Vermont, xxxv, 380. ----, fossil footmarks of Turner's falls, Mass., xlvi, 73.^f ----, ---- ---- the ornithichnites of the Connecticut river sandstone, xlv, 178. ----, ---- ---- in the Connecticut valley, xlvii, 381; xlviii, 158^f; xlix, 213.^f ----, ---- ----, reply to _E. Hitchcock_, xlvii, 399. ----, ---- and rain drops, xlix, 213.^f ----, ---- ----, new species of Batrachian, xlix, 79.^f _Dearborn, H. A. S._, on the changes of level in the North American lakes, xvi, 78.^f Deaths, monthly, among infants in France, xix, 192. ----, statistics of, among the white troops in the West Indies, xxxvii, 196. ----, see _Obituary_. _De Candolle, A. P._, biographical notice of, _G. B. Emerson_, xlii, 217. ----, anecdote of, iv, 388. ----, Species Plantarum announced, i, 435. Deccan, geology, &c. of, xxxiii, 274. Decomposition of vegetable and animal substances, most favorable circumstances for, xv, 182. Decrepitation, cause of, _M. Baudrimont_, xxxi, 162. Definitions, remarks on, _D. Wilkie_, xxx, 28, 266; xxxi, 88, 236. Deflagrator, Hare's, iii, 105^f; iv, 201; v, 94.^f ----, and calorimotor, their relations to one another, and to other galvanic instruments, vi, 337. ----, its improved forms, deflagrating power, anomalous polarity, _R. Hare_, vii, 347^f; viii, 99; ix, 181. ----, galvanic, _R. Hare_, xl, 48. ----, improved form of, _M. Faraday_, xxxii, 170. Degradation of greenstone in the Connecticut valley, vi, 55. ---- in western New York, _G. E. Hayes_, xxxv, 88. _De la Beche, H. T._, rocks of Europe, classification of, xviii, 26. _De Lalande_, notice of, iv, 381. ----, prizes founded by, xxv, 190. _De la Rive, A._, galvanic instrument by, v, 395. ----, and _Macaire_, experiments on muriatic acid, xi, 393. ----, present state (1833) of the principles in electricity, xxvi, 175. ----, on electro-magnetic currents, xxxiv, 6. _De la Rue, W._, structure of electro-precipitated metals, xlix, 390. Delirium, Dwight's cases of, i, 431. _Del Rio, A._, in reply to _Prof. Shepard_, xxx, 384. ----, reply of _Prof. Shepard_ to, xxxi, 131. De Luc's column, on the construction of, _R. Hare_, xxv, 136.^f _De Kay, J. E._, on the Pennatula sagitta of Lamarck, iv, 87.^f ----, on the supposed transportation of rocks, xiii, 348. ----, report on the bones of Big Bone Lick, xx, 370. ----, report on the fishes of New York, notice of, _D. H. Storer_, xlv, 275. Denderah, zodiac of, removed to France, v, 191; vi, 200. _Dent, E. J._, a portable mercurial pendulum, xxxv, 289. ----, on the errors of chronometers and on a new compensation-balance, xlv, 83.^f Denudation by Long Lake and Mud Lake, Vt., xi, 39.^f _Descartes_, theory of, xxxiii, 3. ----, head, presented to the French Institute, iv, 390. Deserts, origin of, _W. C. Redfield_, xxv, 134; xxxiii, 261. _Desfontaines_, life and writings of, xxvii, 201.