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BETAlNE

A colourless alkaloidal body of crystalline nature contained in molasses of beet sugar.

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BEINZAMINE LACTATE

A white crystalline organic; compound, soluble in water and alcohol, used in medicine and for the production of eueaine.

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BENZINE

is not synonymous with benzene, but is a light petroleum oil. Persian benzine contains only 232 percent, benzene, and this is associated with toluene, xylene, and many other hydrocarbons.

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BEAKERS

are thin glass vessels made of such a quality as to withstand exposure to heat, cylindrical in shape with flat bottoms, and are sometimes provided with a lip to facilitate the transfer of contents. They are of various sizes, from quite small ones up to a capacity of a litre and more; and are not only used for holding and heating liquids, but also for effecting many chemical operations.

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BURNERS

Gasburners used in laboratories are of various types, according to the application that is to be made of them, apart from those used for illumination. Fish Tail BurnerThis resembles the oldfashioned sort used for lighting rooms, the flame of which is like a fishtail or bat

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BRUCITE

A native form of magnesium hydroxide, found in serpentine rocks in Shetland and Texas.

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BATHSTONE

A natural formaii< n of rock chiefly composed of calcium carbonate, and largely employed in the construction of buildings.

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BERBERINE

H17NO,,IIaOA crystalline alkaloidal body without marked physiological properties found present in the roots of Hydrastis canadensis. It is soluble in water and alcohol; meltingpoint 1450 C.

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BETA NAPHTHOL

is contained in and obtained from coaltar in the form of white, glistening, crystalline plates with a phenolic odour. It melts at 122 degrees C., and boils 282 degrees C., can be purified by sublimation, and is soluble in alcohol and ether. It constitutes the startingpoint from which a number of dyes are obtained, and is used medirinallyas an intestinal antiseptic in diarrhea of children.

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BROMVRTTE

Natural silver bromide containing 57 per cent of silver, found in New Mexico and Nevada.

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