—, capillary attraction influenced by, J. W. Draper, xxvi, 399.

—, —, — productive of, ix, 193.

—, conducting power of liquid gases, xxi, 374.

—, —, — of the metals, xii, 199.

—, —, — of steam, xxvii, 206.

—, —, — of the solar rays, xvii, 391.

—, the conductibility of, by liquids, increased by adding water, xvii, 165.

—, by contact, Karsten, xxxi, 159.

—, decomposition of water by atmospheric and common, xxi, 368.

—, discharge, lateral, J. Henry, xxxiv, 16.f