— jar, on the discharge of, xxxviii, 6.

— kite, for determining the electricity of the upper currents of the air, J. Swaim, xxxii, 304.f

— lady, explanation of, xxxiii, 394; xl, 386.

— light, a mode of producing, viii, 380.

— machine, form and arrangement of, W. R. Johnson, xxv, 66.

— —, plate, viii, 378.

— —, —, R. Hare, vii, 108f; xxxii, 272.f

— —, communication of, with the earth not necessary, R. Hare, xxiv, 253.

— pile, theory of, xix, 375.

— shock from a cat, mode of receiving, viii, 391.