—, —, in Michigan, xli, 185.
—, —, in Pennsylvania, viii, 239.
[—, sulphurets of,] in Canada, viii, 47, 75.
—, —, in Connecticut, i, 316; vi, 206, 231; xxxiii, 160.
—, —, in Massachusetts, i, 115, 136, 437; vi, 207; x, 215; xxii, 61.
—, —, in Maryland, xviii, 80; xxvii, 20, 23.
—, —, in Michigan, xli, 185.
—, —, in New York, viii, 249.
—, —, in New Jersey, ii, 192, 198; v, 268.
—, —, in North Carolina, xli, 183, 348.