Autumnal coloration of leaves, Macaire Prinsep's view of, xvi, 215.
Automolite, locality in Connecticut, xii, 156.
—, — New Jersey, v, 402.
Aventurine feldspar, M. Scheerer, xlix, 394.
Avogadro, elastic force of the vapor of mercury, xxiv, 286.
Axinite in Canada, viii, 62.
Azote, see [Nitrogen.]
B.
Babbage, C., on the decline of science in England, xx, 164.
—, fees of admission to learned societies of Britain, xx, 165.