—, discovery of, xxvii, 355.f
—, Maidstone, xxvii, 420.
Ilicine, in fevers, xxii, 349.
Ilex laurifolia, v, 289.
Illinois, geology of Upper, C. U. Shepard, xxxiv, 134.f
—, —, ibid, coal formation, xxxiv, 142.f
—, Lake shore near Chicago, xxxiv, 134.
—, route, expense, &c., of the Michigan and Illinois canal, xxxiv, 138.
—, mineral and brine springs, xxxiv, 157.
Ilmenite, (Crichtonite,) localities of, in Connecticut, xii, 161, 170; xxxv, 179; xliii, 364.f