—, geological structure of, F. Ferrara, viii, 201.
[Ether] in space, idea of, when introduced, xxxiii, 1.
— —, resistance to motion of heavenly bodies, xvii, 389.
— —, examination of the theory of, R. W. Haskins, xxxiii, 1.
—, boracic, xlviii, 189.
—, chloric, new mode of obtaining, S. Guthrie, xxi, 64.
—, hydriodic, M. Serullas, xviii, 161.
—, hyponitrous, R. Hare, xxxv, 329.
—, nitrous, new process for, R. Hare, ii, 326.
—, nitric, process for, R. Hare, xxxiii, 241.f