—, see farther under [Meteorology.]
Hygrometry, a method of experimenting in, x, 387.
Hyperbola, method of describing, R. G. Hazard, xxi, 314.f
Hypersthene of N. York, analysis of, L. C. Beck, xlvi, 35.
—, in Massachusetts, iv, 55.
Hyssopus anisatus, iv, 65.
I.
Ice, artificial preparation of, xviii, 145.
—, evaporation of, xvi, 390.
—, formation of, in still water, iii, 179.