—, fall of, from the atmosphere in India, M. Prinsep, xxxii, 199.
—, the limits of their occurrence in high latitudes, vi, 383.
—, removal from salt to fresh water, xl, 405.
—, see farther under [Zoology.]
—, fossil, remarks on, R. I. Murchison, xxxiv, 46.
—, —, of England and Scotland, xxviii, 75.
—, —, American, W. C. Redfield, xli, 24.
—, —, —, identified from fossil teeth, L. Agassiz, xxviii, 276.
—, —, in the Connecticut valley, E. Hitchccock, vi, 76.f
—, —, —, at Sunderland, Mass., E. Hitchcock, iii, 222, 365.