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A process by which copper matte is treated by passing through it a blast of air, to oxidize and remove sulphur. It is analogous in apparatus to the Bessemer process for decarbonizing cast iron. So called from Pierre Manhès, a French metallurgist, who invented it.

A process, now no longer used, invented by J. N. Niepce, a French chemist, in 1829. It depends upon the action of light in rendering a thin layer of bitumen, with which the plate is coated, insoluble.

A process of desilverizing argentiferous lead by repeated meltings and skimmings, which concentrate the silver in the molten bath, the final skimmings being nearly pure lad. The processwas invented in 1833 by Hugh Lee Pattinson, an English metallurgist.

A process for preserving timber and rendering it incombustible by impregnating it successively with solutions of sulphate of iron and calcium chloride in vacuo. --Payn"ize, v. t.

See Open-hearth process, etc., under Open.

A process (invented about 1899 by Frederick W. Taylor and Maunsel B. White) for giving toughness to self-hardening steels. The steel is heated almost to fusion, cooled to a temperature of from 700º to 850º C. in molten lead, further cooled in oil, reheated to between 370º and 670º C., and cooled in air.…

Same as Basic process, above.

A process of electric welding in which heat is developed by a large current passing through the metal.

A method of sinking through water-bearing ground, in which the shaft is lined with tubbing and provided with an air lock, work being proceeded with under air pressure.

The process of attachment by garnishment. [U. S.]

The process of treating silver ores by grinding in pans or tubs with the addition of mercury, and sometimes of chemicals such as blue vitriol and salt.

A process for the recovery or regeneration of manganese dioxide in the manufacture of chlorine, by means of milk of lime and the oxygen of the air; -- so called after the inventor.

In process of; in the act of; into; to; -- used with verbal substantives in -ing which begin with a consonant. This is a shortened form of the preposition an (which was used before the vowel sound); as in a hunting, a building, a begging. "Jacob, when he was a dying" Heb. xi. 21. "We'll a birding together." " It was a…

The process of grafting now called inarching, or grafting by approach.

The act or process of laying bare the roots of trees to expose them to the air and water. [Obs.] Evelyn.

tion of pus or purulent matter in any tissue or organ of the body, the result of a morbid process. Cold abscess, an abscess of slow formation, unattended with the pain and heat characteristic of ordinary abscesses, and lasting for years without exhibiting any tendency towards healing; a chronic abscess.…

The act or process of cutting off. "Not to be cured without the abscission of a member." Jer. Taylor.

l off and secrete one's self; -- used especially of persons who withdraw to avoid a legal process; as, an absconding debtor. That very homesickness which, in regular armies, drives so many recruits to abscond. Macaulay.

The vessels by which the processes of absorption are carried on, as the lymphatics in animals, the extremities of the roots in plants.

The act or process of absorbing or sucking in anything, or of being absorbed and made to disappear; as, the absorption of bodies in a whirlpool, the absorption of a smaller tribe into a larger.