—, effect of a current of air on flame, xxxii, 88.f
—, on the vascular system of ferns, xxxv, 113.f
—, monstrous flower of Orchis spectabilis, xxxv, 117.f
—, on yellow showers of pollen, xlii, 195.f
—, on a curious fungus, Craterium pyriforme, xlii, 195.
—, on the crystals in the tissues of plants, xlv, 149; xlviii, 17.f
—, fossil polythalamia from the upper Mississippi and Missouri, xli, 400.f
—, — —, in the U. States, xlviii, 340.f
—, on fossil infusoria, in peat earth, West Point, N. Y., xxxv, 118.f
—, infusoria of the family Bacillaria, xli, 284f; xlii, 88f; xliii, 321f;