—, — ibid, W. W. Mather, xlix, 284.

—, — ibid, H. D. and W. B. Rogers, xliv, 360.

Lewis, J. A., Kenawha gas, xlix, 209.

Lewis, W. J., involution of polynomials, xlii, 239.

Lexicography, contributions to English, J. W. Gibbs, xxxiii, 324; xli, 28, 32; xlv, 96.

Leyden jar, effect of freezing water in, viii, 374.

— —, on the discharge of, xxxviii, 6.

Lezch, J. U., volatile acids of butter, xlix, 202.

Lias of the west, S. P. Hildreth, xxx, 395.

Liatris flexuosa, xxxvii, 388.f