Mitchell, J., on the ignis fatuus, xvi, 246.
Mitchell, J. K., on the liquefaction and solidification of carbonic acid, xxxv, 346.f
Mitchell, T. D., carbonic oxide obtained free from carbonic acid, xxv, 344.
Mitchell, Wm., on the tails of comets, xxxviii, 35; xl, 59.
—, magnetic dip at Nantucket, xlvi, 157.
Mitchill, S. L., conditions of the growth of plants on living animals, xii, 21.
—, on the Mus bursarius or pouched rat, of Canada, iv, 183.
—, on the Proteus of the N. A. Lakes, iv, 181.
—, on a group of polyps, v, 46.
—, a new Raja, ix, 290.