Walker, S. C., on the great comet of 1843, xlv, 188.f
—, on the meteors of August, 1840, xl, 51;
–on the meteors of August and November, xlii, 401.
Walkly, N., on hydrogen gas in a lead water-pipe, xxxiv, 393.
Walks and alleys, valuable material for, xxiv, 206.
Walls or dikes in North Carolina, J. Beckwith, v, 1.
—, how preserved from dampness, xii, 193.
Wallace, J., on certain Algebraic series, vii, 278.
—, reply to remarks on, ix, 98.
—, numerical faculties, vii, 285.