Of The Gold Coast The Cape And Natal Turacine The Name Proposed





for it, is noticed here only because it is the first animal or vegetable

pigment, with copper as an essential element, which has been hitherto

isolated. The colour is extracted by solution in an alkali, and

precipitation by an acid, and is changed on long exposure to air and

moisture to a green hue. As the entire plumage of a bird yields not more

than three grains of pigment, turacine must be looked upon as a mere

curiosity.





Of The Bixa Orellana And Appears Generally To Contain Two Colouring Of These There Are Three Tints Deep A So-called Pale And Lemon facebooktwittergoogle_plusredditpinterestlinkedinmail

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