—, improved, R. Hare, xxxiii, 244.f
Crystals, compound, formation of, J. D. Dana, xxx, 275.f
—, drawing of figures of, J. D. Dana, xxxiii, 30.f
—, models, of mica, xxxviii, 187.
—, a new fluid in, vii, 186.
—, two new fluids in, xii, 214.f
—, naphtha in, C. Dewey, i, 345.
—, pseudomorphous, see [Pseudomorphous.]
—, cause of double refraction in, xxi, 299.
—, with rounded angles and bent, in New York, deductions from, L. C. Beck, xlvi, 333.