Tioga coal, xiii, 32, 381.
Titaniferous iron ore, near Baltimore, T. G. Clemson, xvii, 42.
— — —, P. Berliner, xxiv, 375.
Titanium, metallic, vii, 192.
—, volatility of, Zinken, xxviii, 136.
—, crystals of, in the furnaces of Baden, xii, 189.
— in scoria, Wollaston's mode of detecting, xix, 188.
— in rocks, xxviii, 136.
— ores, in Connecticut, iv, 55.
— —, in Greece, xxxi, 175.