—, see farther [Zoology.]
Rodman, W. W., new localities of minerals, xxxv, 179, 180.
Rodriguez, P. J., on comets, xvi, 94.f
Roger, T., on the preservation of insects, xix, 213.
Rogers, G. A., method of manufacturing pot and pearl ashes, viii, 304.
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.