the Fourth Week of Advent
free while helping to build churches and support pastors in Uganda.
Click here to learn more!
Bible Encyclopedias
Chlorophyll
1911 Encyclopedia Britannica
or (from Gr. xXcopos, green, 4nXXov, a leaf), the green colouring matter of leaves. It is universally present in growing 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. avOos, yellow) is dark brown; carotin is 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 blood. Chlorophyll is neutral in reaction, insoluble in water, but soluble in alcohol, ether, &c., the solutions exhibiting a green colour and a vivid red fluorescence. Magnesium is a necessary constituent. (See S. B. Schryver, Science Progress, 1909, 3, p. 425.)
These files are public domain.
Chisholm, Hugh, General Editor. Entry for 'Chlorophyll'. 1911 Encyclopedia Britanica. https://www.studylight.org/encyclopedias/eng/bri/c/chlorophyll.html. 1910.
