Lithographic Stone. A slaty compact limestone, of a yellowish color and fine grain, used in lithography, which is the art of drawing upon and printing from stone Etym., λιθος, lithos, stone, and γραφο, grapho, to write.
Lithoidal. Having a stony structure.
Lithological. A term expressing the stony structure or character of a mineral mass. We speak of the lithological character of a stratum as distinguished from its zoological character. Etym., λιθος, lithos, stone, and λογος, logos, discourse.
Lithophagi. Molluscous animals which form holes in solid stones. See "Lithodomi." Etym., λιθος, lithos, stone, and φαγειν, phagein, to eat.
Lithophites. The animals which form Stone-coral.
Littoral. Belonging to the shore. Etym., littus, the shore.
Loam. A mixture of sand and clay.
Lophiodon. A genus of extinct quadrupeds, allied to the tapir, named from eminences on the teeth.
Lycopodiaceæ. Plants of an inferior degree of organization to Coniferæ, some of which they very much resemble in foliage, but all recent species are infinitely smaller. Many of the fossil species are as gigantic as recent Coniferæ. Their mode of reproduction is analogous to that of ferns. In English they are called club-mosses, generally found in mountainous heaths in the north of England.
Lydian Stone. Flinty slate; a kind of quartz or flint, allied to Hornstone, but of a grayish black color.