Citricic acid, S. Baup, xxxiv, 206.
Civilization, connection of, with mental aberration, xxii, 379.
Clam, eatable, of N. Y., facts regarding, x, 287.
Clark, D. A., singular appearances of snow and hail, ii, 132.
Clark, S., on the infinite divisibility of a finite quantity of matter, ix, 356.
—, notice of, xli, 217.f
Clarke, E. M., magnetic electrical rotating machines by, xxxiii, 213.f
—, electrepeter by, xxxiii, 224.f
Clary, R. E., parhelia seen at Green Bay, xxviii, 304.f