—, on volcanoes and volcanic substances, iv, 205.
Cooper's rotative piston, xvi, 313.f
Copaiva balsam, a new preparation of, by G. W. Carpenter, xvi, 40.
Copal, notice of, xliv, 212.
—, solution of, aided by camphor, xiii, 174.
— varnish, Berzelius, xvii, 175.
Copernicus, monument to, at Warsaw, iv, 387.
Coprolites, in Connecticut valley, E. Hitchcock, xlvii, 113, 308.f
— of birds, analysis of, S. L. Dana, xlviii, 46.
[Copper,] atomic weight of, xlviii, 402.