—, —, investing quartz, vegetable stalks, &c., L. Lyon, xii, 162.
—, —, in a peat field, J. T. Plummer, xliv, 312.f
—, —, specific gravity of, xix, 388.
—, —, cause of decomposition of, xix, 387.
—, —, of Rossie, complex crystal of, xlvi, 36.f
—, —, in Connecticut, i, 316; v, 44; vii, 56; x, 13; xxxiii, 160.
—, —, in Georgia, xxiv, 9.
—, —, in Kentucky, iii, 233.
—, —, in Massachusetts, viii, 54; x, 13, 18; xxii, 51.
—, —, in Missouri, iii, 67.