Latrobite, analysis of, Gmelin, ix, 330.
Laudanum, denarcotized, mode of preparing, R. Hare, xii, 291.
Laumonite, in Delaware, ix, 246.
—, in New York, vi, 365; ix, 41.
—, in Nova Scotia, xxx, 345.
—, moving rocks in a lake in Salisbury, ix, 239.
Lea, H. C., description of eight new species of shells, xlii, 106.f
—, new tertiary shells from Alabama, xl, 92.f
—, examination of the peroxide of manganese, xlii, 81.