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WYMAN

Strap. An arrangement of straps for holding a violently insane person in bed.

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WELDON PROCESS

is one for the recovery of the manganese from the manganous chloride resulting from the manufacture of chlorine, in the form of manganese dioxide or its equivalent, for use over again. The liquor is treated with an excess of milk of lime and air blown through the mixture, and in this way, the manganese hydroxide is converted mainly into a combination of manganese dioxide with calcium oxide, forming the Weldon mud.

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WICKING

Loosely twisted unspun roving; it is employed in packing cavities.

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WOODSPIEIT or METHYL ALCOHOL

So named from its derivation from wood tar, particularly beechwood tar.

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WATEROVEN

An appliance, as illustrated in the figure, in which it is possible dry chemical substances at too degrees C., consisting of a water jacketed copper box which can be heated by a lamp placed below. A vent is provided for the escaping steam and for charging the jacket with water,and through the other opening on the top, a thermometer fitted with a cork may be placed. The figure shows such an oven connected with a condenser for the escaping steam, which may be thus made to furnish a supply of distilled water.

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WILLEMITE

A native zinc silicate abundant in New Jersey.

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WURTZITE

A native crystalline variety of zinc sulphide found in Montana, Utah, etc.

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WOKMSEED OIL

A yellowish essential oil of unpleasant odour with a sp. gr. of 093; soluble in alcohol, ether, etc., and distilled from the unexpanded flower buds of the Artemisia maritima L.. It contains cineol, dipentene, terpineol, etc. An American variety is derived from the seeds of Chenopodium ambrosiuides, and contains cymene, sylvestrene. camphor, etc. Artemisia Annua is stated to contain a ketonic body which upun oxidization yields a substance of the lormula C10H16O, of sp. gr. 0871, boilingpoint 182 degrees C., and refractive index 14688.

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WIND

W., Evening. See W., Mountain. W., Local, one peculiar to and affecting the climate and healthfulness of a given region. Cf. Foehn, Harmattan, Khamsin, Alistral, Norther, Simoon, Siroceo, Solano, Mumuku. W., Morning. See IV, Valley. W., Mountain, in climatology, the diurnal current of air in mountain valleys which generally moves downward from higher to lower altitudes; also called the evening wind. W., Valley, the diurnal current of air in mountain valleys which generally moves upward from the valley; also called morning wind.,

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WOOL FAT

Contains a number of fats and cholesterin. Compare Adeps Lanae and Suint.

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