The first or seed-leaves of plants.

A class of articulated animals, having the skin of the body generally more or less hardened by the deposition of calcareous matter, breathing by means of gills. (Examples, Crab, Lobster, Shrimp, etc. )

The old generic term for the Beetles known as Weevils, characterised by their four-jointed feet, and by the head being produced into a sort of beak, upon the sides of which the antennae are inserted.

Of or belonging to the skin.

The wearing down of land by the action of the sea or of meteoric agencies.

The wearing away of the surface of the land by water.

A series of Palaeozoic rocks, including the Old Red Sandstone.