Mold

Collier's New Encyclopedia (1921)

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 whether of clay, of the surface stratum, um, gravel, sand, or rock, d rock, disintegrated by atmospheric 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-R In anatomy: A fontanel or space occupied by a cartilaginous membrane situated at the angles of the bones which form the skull in a human fœtus and a new-born child. In building: A frame to give shape to a structure, as in the building of houses in concrete, béton, 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 horizontal position. Such are ingots and some other objects. (2) Close molds of metal or plaster of Paris, with ingates by which the molten metal enters. Such are the molds for inkstands, cannon balls, bullets, 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 goldbeater'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 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 represents. MOLDAU (mol'dou) (Bohemian, Vltava), the chief river of Bohemia, and an important tributary of the Elbe, rising in the Böhmerwald mountains, on the S. W. frontier, at an elevation of 3,870 feet above sea-level, and flowing S. E. to Hohenfurt where it bends N., and pursues that direction to its confluence with the Elbe opposite Melnik, after a course of 278 miles.