—, on the formation of, in vegetables, M. Vauquelin, xviii, 150.
Acoustic rainbow, xxi, 381.
Actinolite, in Canada, viii, 68.
—, glassy, from Concord, Penn., analysis of, H. Seybert, vi, 331.
—, in Connecticut, vi, 226; vii, 253; viii, 259.
—, in Maryland, xiv, 12.
—, in Massachusetts, i, 114; ii, 236; viii, 48, 235; ix, 54; x, 214.
—, in New Jersey, v, 246.
—, in New York, ix, 243, 250.
—, in North Carolina, v, 261.