—, singular conformation of limestone, ix, 19.f
—, on the rocks of New York, xxxiii, 121.
—, naphtha in quartz crystals, i, 345.
Deweylite from Middlefield, Mass., analysis of, C. U. Shepard, xviii, 81.
—, analysis of, T. Thomson, xxxi, 173.
De Witt, S., mode of drawing ellipses, xxiv, 369.f
—, a conical raingauge, xxii, 321.f
—, obituary notice of, xxvii, 395.
Diabetes, cause of, xlix, 202.
Diabetic urine, to detect sugar in, xlix, 200.