— —, ibid, C. Lyell, xlvi, 318.
Martin, A. St., account of the opening into his stomach, and experiments on the gastric juice of, W. Beaumont, xxvi, 194.
Martin, J., on the central forces of bodies revolving about fixed axes, xxxix, 262.f
Martius, C. F. P. von, on the spiritual life of plants, xl, 170.
—, works of, noticed, xlv, 217; xlviii, 207.
Maryland, Bare Hills, near Baltimore, H. H. Hayden, xxiv, 349.f
—, minerals of, G. W. Carpenter, xiv, 1.
—, — of Baltimore and Harford Cos., P. T. Tyson, xviii, 78.
—, chromic iron of, iv, 321; xxiv, 349, 355; xxvii, 18, 20.