— — buoyancy of, at great depths, xxviii, 111.
— — gravel, &c., remarks on, Sedgwick, xxxiii, 287.
— — theory of, B. Struder, xxxvi, 325.
— glacial theory of Agassiz, xlii, 352.f
— see farther under [Drift] and [Scratches].
Erythronium, supposed new metal, xx, 386.
Esophagotomy, iv, 383.
Espy, J. P., views on storms, xxxix, 120; xl, 327.
—, — —, notice of, by A. D. Bache, xxxv, 280.
—, on the causes of the daily fluctuations of the barometer, xli, 42.