—, on manures as stimulants to vegetation, xlii, 319.
—, effect of arsenic on vegetation, xxxi, 346.
Daubuisson's Elements of Geology announced, ii, 166.
Davenport's rotating electro-magnetic machine, xxxii, appendix after 216.
—, electro-magnetic machine, xxxiii, 193.
Davies, C., demonstration of a problem in conic sections, vi, 280.f
Davyne, analysis and figure of, xi, 255.f
Day, possible variation in the length of, W. W. Mather, xlvi, 344.
Day, G. E., on the restoration of the deaf and dumb to hearing, xxx, 301.
Dead animals, means of employing, M. Payen, xxiv, 326.