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CHLOROPHYLL (from Gr. XAwpos, green, ...

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Originally appearing in Volume V06, Page 257 of the 1911 Encyclopedia Britannica.
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CHLOROPHYLL (from Gr. XAwpos, See also:green, 4bXXov, a See also:leaf) , the green colouring See also:matter of leaves. It is universally See also:present in growing See also:vegetable cells. The pigment of leaves is a complex mixture of substances; of these one is green, and to this the name, originally given in 1817 by Pelletier and Caventou, is sometimes restricted; xanthophyll (Gr. EcvOos, yellow) is dark See also:brown; carotin is See also:copper-coloured. Chlorophyll is related chemically to the proteids; a decomposition product, phylloporphyrin, being very closely related to haematoporphyrin, which is a decomposition product of haemoglobin, the red colouring matter of the See also:blood. Chlorophyll is neutral in reaction, insoluble in See also:water, but soluble in See also:alcohol, See also:ether, &c., the solutions exhibiting a green See also:colour and a vivid red See also:fluorescence. See also:Magnesium is a necessary constituent. (See S. B. Schryver, See also:Science Progress, 1909, 3, P.

End of Article: CHLOROPHYLL (from Gr. XAwpos, green, 4bXXov, a leaf)

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CHLOROSIS (Gr. xXwpbs, pale green)

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