— of nitrous oxide, vii, 355.

— of cyanogen, vii, 356.

— of ammonia, vii, 357.

— of muriatic acid, vii, 357.

— of chlorine, vii, 357.

— of gases, J. Torrey's experiments on carbonic, sulphurous and chloro-chromic acids, xxxv, 374; xxxvi, 394.f

— —, J. K. Mitchell, xxxv, 346.f

— —, Thilorier, xxxi, 163, 402, 404.

Conduction of water, W. W. Mather, xiii, 368.f

— —, as shown by Murray's experiments, C. Dewey, xxviii, 151; xxxi, 246.