— 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.