A P PA RAT U S F0 R F R A C TI0 N A L D ISTI L LA T I 0?i’ 1lY
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HIS apparatus for fractional distillation of mixtures of liquids of different boiling points is constructed on t1iP clephlegmator principle. Although the opening of the recurved main tube is never closed by the condensed liquid, comparatively only small quantities of vapors of the liquids, condensable in the respective bulbs, ascend or ultiinately escape in the condenser. so that b y a second distillation liquids of practically uniform boiling points are obtained. I have used this apparatus for the preparation of paraffins and benzene derivatives, and can reconinieiicl it as a good and practical instrument. T h e principle employed is evident from the figure, arid a n y glass blower can make it. AYE%’ Y O R K , S O Y F > l H E R 23
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Read December 8, 1893.
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