— —, in Ohio, S. Gazlay, xxv, 104.
— —, —, trees near Gallipolis, S. P. Hildreth, xii, 205.
— —, in Russia, vi, 398.
— —, in Scotland, near Glasgow, a tree, iii, 382.
— —, in Texas, silicified, xxxvii, 215.
— —, —, part silicified and part bituminized, xxxvii, 216.
— —, in Virginia, i, 216.
— —, in West Indies, i, 56; S. Hovey, xxxv, 79.
— —, W. M. Carpenter on, recently bituminized, xxxvi, 118.f
— —, Nicoll's sections, xxviii, 74.