— — in gneiss and granite, in New Hampshire, O. P. Hubbard, xxxiv, 105.f
— — in the Connecticut valley, vi, 46, 47.
— — in Connecticut, xxvii, 104.f
— — —, B. Silliman, Jr., xlvii, 107.
— — —, junction of, with sandstone, A. B. Chapin, xxvii, 104.
— — —, ibid, B. Silliman, xvii, 123.f
— — in Massachusetts, at Lowell, Nahant, &c., xxvii, 342.
— — in New York, Essex Co., connection of, with iron ores, E. Emmons, xl, 81.
— —, —, —, W. C. Redfield, xxxiii, 316.
— — in Michigan, D. Houghton, xli, 184.