_Rogers, H. D._, on the falls of Niagara, xxvii, 326.^f ----, Geology of the United States, notice of a memoir read before the British Association, xxviii, 74. ----, opinion on age of graywacke, opposed, xxxv, 243. ----, ibid, explanation concerning, _B. Silliman_, xxxv, 250. ----, on trap dikes in Pennsylvania, xli, 173. ----, ---- ----, crescent form of, xlv, 334. ----, on diluvial action, xli, 175. ----, Pennsylvania coal formation, xli, 177. ----, dip of new red sandstone, due to oblique deposition, xliii, 170. ----, dispersion of drift due to waves of translution from the north seas, xliii, 153. ----, on hydrated minerals, xlv, 147. ----, on the ancient temperature of the globe, xlv, 147. ----, Address before the American Association of Geologists and Naturalists, including a review of American geology and some branches of general geological dynamics, xlvii, 137, 247. ----, characters of some recent earthquakes, as bearing upon the dynamics of geology, xlv, 341; xlvii, 274. ----, paroxysmal undulations of the earth's crust, a cause of flexures of strata, xlv, 345, 346; xlvii, 276. ----, constitution of the atmosphere during the coal era, xlvii, 105. ----, first Report on the Geology of Pennsylvania, noticed, xxxii, 192. ----, second Report on Geology of Pennsylvania, noticed, xxxiv, 188. ----, third Report, ibid, xxxvii, 380. ----, fifth Report, ibid, xli, 385. ----, origin of the Appalachian coal strata, xliii, 178. ----, structure of the Appalachian chain, xliii, 177; xliv, 359. ----, scratches, diluvial, in Pennsylvania, xliii, 180. ----, a new compound containing platinum, xxxix, 369. _Rogers, J. B._, and _J. Green_, experiments with the elementary voltaic battery, xxviii, 33. _Rogers, J. B._, dolomite, a double salt, xli, 172. ----, analysis of meteoric iron, xliii, 169. _Rogers, Moses_, Savannah steamer the first which crossed the Atlantic, commanded by, xxxviii, 155. ----, ----, log-book of, preserved at Philadelphia, by the American Philosophical Society, xl, 34. _Rogers, R. E._, on limestones, xli, 171. ----, new instruments and processes for the analysis of the carbonates, xlvi, 346.^f _Rogers, S._, letters on the manufacture of iron, xlii, 380. _Rogers, W. B._ and _H. D._, experimental enquiry into some of the laws of the elementary voltaic battery, xxvii, 39.^f