—, currents of, xxv, 131; xlv, 299.
Packfong, composition of, xv, 396.
Paddle fish, Ohio, xii, 201.f
Paddle wheel and screw, propulsion of vessels by, xlii, 336.
Padua, v, 177.
Pæstum, on the stone of which the temple of, is built, xxxvii, 366.
Page, C. G., movements on the surface of water produced by the vibration of glass, xxx, 192.
—, echo in Virginia, xxxvi, 174.
—, new electrical instruments, xxvi, 110.f
—, method of increasing shocks with J. Henry's apparatus for obtaining sparks and shocks from the calorimotor, xxxi, 137.f