— in plants, discovered by Turpin, xix, 177; xx, 382.
— —, of oxalate of lime, Turpin, xxi, 372.
— —, J. W. Bailey, xlv, 149; xlviii, 17.f
— in geodes, facts tending to illustrate the formation of, viii, 282.
— —, ibid, J. D. Dana, xlix, 52.
—, rotation of, while forming, indicating polarity, as seen under the solar microscope, B. F. Joslin, xxxv, 150.
— of Andalusite from Westford, Mass., xlvi, 381.f
— of apatite, bent and rounded, xlv, 143; xlvi, 365.f
— of anatase, xlvii, 215.f
— of Beaumontite, xlvi, 234.f