Iowa, mounds of various imitative shapes in, S. Taylor, xliv, 21.f
Ipecacuana, analysis of, xvii, 385.
Ireland, geographical distribution of plants in, xxxi, 367.
Iridium, method of obtaining, from the platinum residue, F. Wöhler, xxvi, 371.
—, means of obtaining pure, Fremy, xlviii, 185.
Iris, affords a good test liquor, v, 408.
Iris Duerinckii, xlv, 176.
— lacustris, iv, 57.
Iriscope, Reade's experiments with, xl, 334.
[Iron,] action of, on ammonia, xviii, 146.