MOLD, or MOULD, in botany, the name given to any thread-like fungal, whether belonging to the Hyphomycetes or the Physomycetes, which are found on bread, ink, gum, etc. Brown, blue, or green mold is Penicillium glaucum; another green mold is Mucor mucedo.
In geology: Vegetable soil consisting of the surface stratum, whether of clay, gravel, sand, or rock, disintegrated by at mospheric influences and modified by the plants, first of lower and then of higher organization, and by the animals which reside upon or pass over its surface.
VoL VI—Cyc-13.
In anatomy: A fontanel or space occu pied by a cartilaginous membrane situ ated at the angles of the bones which form the skull in a human foetus and a new-born child.
In building: A frame to give shape to a structure, as in the building of houses in concrete, beton, clay, cement, etc.
In founding: Molds for casting are of several kinds: (1) Open molds into which the metal is poured, the upper surface of the fluid metal assuming the hori zontal position. Such are ingots and some
other objects. (2) Close molds of metal or plaster of Paris, a ith ingates by which the molten metal enters. Such are the molds for inkstands, cannon balls, bul lets, type, and various other articles made of lead, tin, zinc, and their alloys, which fuse at a moderate heat. (3) Close molds of sand, in which articles of iron, brass, bronze, etc., are cast.
In gold-beating: The package of gold beater's skin in which gold leaf is placed for the third beating.
In paper making: Hand-made paper is made by a mold and deckle. The mold is an open, square frame with a wire cloth bottom, and a little larger all round than the required sheet of paper.
In plastering: A thin board cut to a pattern and used in forming cornices, etc.
In shipbuilding: A full-sized pattern of the same figure and dimensions as the molding side of the piece which it rep resents.