Rape-oil sentence example

rape-oil
  • This apparatus has an oil-cup consisting of a cylindrical brass or gunmetal vessel, the cover of which is provided with three rectangular holes which may be closed and opened by means of a perforated slide moving in grooves; the movement of the slide causes a small oscillating colzaor rape-oil lamp to be tilted so that the flame (of specified size) is brought just below the surface of the lid.
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  • In Germany, where the production of rape oil centres, two principal oil-seeds - rape and Riibsen - are well recognized.
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  • Newly pressed rape oil has a dark sherry colour with, at first, scarcely any perceptible smell; but after resting a short time the oil deposits an abundant mucilaginous slime, and by taking up oxygen it acquires a peculiar disagreeable odour and an acrid taste.
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  • The principal uses of rape oil are for lubrication and lighting; but since the introduction of mineral oils for both these purposes the importance of rape has considerably decreased.
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  • The offensive taste of rape oil may also be removed by treatment with a small proportion of sweet spirit of nitre (nitrous ether).
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  • In the East Indies rape oil and its equivalents, known under various names, are the most important of oils for native use.
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  • These sophistications can be most conveniently detected, first by taste and next by saponification, rosin oil and mineral oil remaining unsaponified, hemp oil giving a greenish soap, while rape oil yields a soap with a yellow tinge.
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  • Lead plaster (emplastrum lithargyri) boiled in rape oil dissolves, and, sulphide of lead being formed, the oil becomes brown or black.
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  • The lowest specific gravity is owned by the oils belonging to the rape oil group - from 0.913 to 0.916.
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  • But the oils belonging to the rape oil group are characterized by considerably lower saponification values, viz.
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