Leipsic fair, notice of, iv, 392; vii, 381; xxiii, 182.
Leitner, E. T., on double flowers, xxiii, 45.
Lens, crystalline, of animals, how preserved for future examination, xxvi, 216.
Lenz on the saltness of the ocean at different depths, xxiii, 10.
Lepidanche, new genus, G. Engelmann, xliii, 343.
—, appressa, xlv, 77.
—, compositarum, xliii, 344f; xlv, 77.
Lepidolite, analysis of, Gmelin, ix, 329.
—, in Maine, x, 16; xviii, 293.
—, in Massachusetts, i, 350.