— —, influence of electricity on, J. W. Draper, xxvi, 399.
— action of different solutions, xiv, 384.
— —, of fissures, viii, 377; ix, 193.
— —, a singular instance of the passage of mercury along a lead bar, J. Henry, xxxviii, 180.
— tubes, electricity produced by ascent of fluids in, ix, 193.
Capitol, at Washington, dimensions of, xvi, 168.
Carbon, supposed crystallization of, C. C. C. Cohen, xx, 167.
—, combustibility of, increased by platina and copper, xviii, 147.
—, electro-magnetic property of, xviii, 175.
—, fused, see [Charcoal.]