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A pipe for leading combustible gases downward from the top of the blast furnace to the hot-blast stoves, boilers, etc., where they are burned.

the draught produced by a blower, as by blowing in air beneath a fire or drawing out the gases from above it. -- Natural draught, the draught produced by the atmosphere flowing, by its own weight, into a chimney wherein the air is rarefied by heat. -- On draught, so as to be drawn from the wood (as a cask, barrel, e…

To have draught, as a chimney, flue, or the like; to furnish transmission to smoke, gases, etc.

A marine gastropod, of several species, which kills oysters and other bivalves by drilling holes through the shell. The most destructive kind is Urosalpinx cinerea. Bow drill, Breast drill. See under Bow, Breast. -- Cotter drill, or Traverse drill, a machine tool for drilling slots. -- Diamond drill. See under Diamon…

A contrivance for temporarily lowering a gas jet.

ic; one of the pair of tympani in an orchestra, or cavalry band. The drums cry bud-a-dub. Gascoigne.

A very intense light, produced by turning two streams of gas, one oxygen and the other hydrogen, or coal gas, in a state of ignition, upon a ball of lime; or a stream of oxygen gas through a flame of alcohol upon a ball or disk of lime; -- called also oxycalcium light, or lime light.

A white, sugarlike substance, C6H8.(OH)2, occurring naturally in a manna from Madagascar, and in certain plants, and produced artificially by the reduction of galactose and lactose or milk sugar.

and a pleasant ethereal odor, produced by the union of chlorine and ethylene or olefiant gas; -- called also Dutch oil. It is so called because discovered (in 1795) by an association of four Hollandish chemists. See Ethylene, and Olefiant. -- Dutch oven, a tin screen for baking before an open fire or kitchen range; a…

nsoluble albuminous body formed from casein and other proteid substances by the action of gastric juice. Meissner.

cence occasioned by fermentation or by any other process which causes the liberation of a gas or an aëriform fluid, as in the mixture of an acid with a carbonated alkali. [Formerly written bullition.]

ally: (Steam Boilers) An arrangement of pipes for heating feed water by waste heat in the gases passing to the chimney.

The outer envelope of a cell; the cell wall. Agassiz.

cal book of the old Scandinavian tribes of German origin, containing two collections of Sagas (legends, myths) of the old northern gods and heroes.

ion; to bubble and hiss, as fermenting liquors, or any fluid, when some part escapes in a gaseous form.

on; that commotion of a fluid which takes place when some part of the mass flies off in a gaseous form, producing innumerable small bubbles; as, the effervescence of a carbonate with citric acid.

Gently boiling or bubbling, by means of the disengagement of gas

Any bombycid moth of the genera Eriogaster and Lasiocampa; as, the oak eggar (L. roboris) of Europe.

A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.

nding in all directions on the removal of external pressure, as the air, steam, and other gases and vapors. -- Elastic limit (Mech.), the limit of distortion, by bending, stretching, etc., that a body can undergo and yet return to its original form when relieved from stress; also, the unit force or stress required to…