—, general remarks on the positions of, Taylor, xxxiv, 9.
— of Pasco, S. A., xvii, 43.f
— of the Hartz, and mode of working, xix, 113.
— of Idria, xxix, 219.
— of Michigan, position of, D. Houghton, xli, 183.
— of Russia, see under [Russia.]
— of Spain, xxviii, 17, 21, 144.
— of Tokat, xxxvii, 352.
—, see farther, under names of Countries, Metals and Minerals.
Minerals, new fluids in cavities of, detected by D. Brewster, xii, 214.