—, of the earth, iv, 372.
—, —, at different depths, xxiii, 14; xxxvii, 357.
—, —, rate of increase downward, A. De la Rive and F. Marcet, xxvii, 397.
—, —, ibid, L. Cordier, xv, 116.
—, —, detailed analysis of, L. Cordier's essay upon, xv, 109.
—, —, criticism of Poisson's view, J. D. Forbes, xl, 319.
—, —, G. Bischof, xxxvii, 52.
—, —, W. Whewell, xxix, 349.
—, —, and of space, Baron Fourier, xxxii, 1.
—, —, effects of internal and solar, on the temperature of the globe, xxxii, 1.