— — at depths, by Scoresby and Buchan, xlv, 139, 140.
—, extreme cold, extraordinary seasons of, N. Webster, xxviii, 183.
— of the ground in Siberia, M. Erman, Jr., xxxvi, 205.
— in Europe, of wells at St. André, xxxvi, 204.
— —, of the cities of Rome, (Italy) and New York, J. Van Rensselaer, xlii, 120.
— —, of a cavern near Montpelier, xxxvii, 73.
— —, at Perth, Scotland, mean annual, xl, 342.
— —, mean, of Inverness, xliv, 158.
— —, —, of Plymouth, England, xxxiv, 20.
— —, cold, of winter of 1837, 8, in England, J. Lindley, xxxix, 18.