height of mountains, 27;
variation of the needle, 28, 29.
—, —, ibid, xl, 81;
–iron ores, 81.
—, —, height of mountains, E. F. Johnson, xxxvii, 84.
—, Kedidica Hook range, ii, 187.
—, Franklin Co., Duane, steel ore beds, xlvi, 26.
—, Fredonia gas, xvii, 398; xxxvi, 6.
—, Genesee Co., sulphuric acid spring, xxxvi, 10.
—, gypsum in, i, 243; iv, 36; v, 39, 40; xvi, 377; xxxvi, 38, 43.