—, Wollaston medal awarded to, xxx, 382.
—, notice of the several works of, xli, 194.
Agate, in Canada, viii, 64.
—, in Connecticut, i, 134; v, 44, 45; vi, 216.
—, in Massachusetts, i, 113, 115; v, 407; vi, 52.
—, in New Jersey, i, 236; ii, 197; v, 239.
—, in North Carolina, v, 261, 264.
—, in Rhode Island, ix, 46.
—, in the Western States, i, 132; iii, 71; vii, 49.
—, cause of red color of, xxxvi, 207.