The Natural Organic Colouring Matters
By
Arthur George Perkin, F.R.S., F.R.S.E., F.I.C., professor of colour chemistry and dyeing in the University of Leeds
and
Arthur Ernest Everest, D.Sc., Ph.D., F.I.C., of the Wilton Research Laboratories; Late head of the Department of Coal-tar Colour Chemistry; Technical College, Huddersfield
Longmans, Green and Co.
39 Paternoster Row, London
Fourth Avenue & 30th Street, New York
Bombay, Calcutta, and Madras
1918
Kaikki kuvat (kemialliset kaavat) puuttuvat // None of the illustrations (of chemical formulas) included.
Toddalia aculeata (Pers.). This Indian plant, belonging to the rutaceæ, is a rambling shrub found in the sub- tropical Himalayas, in the Khasia mountains, and throughout the Western Peninsula and Ceylon.
The root bark is or was used in Madras as a yellow dyestuff, and it is also highly spoken of by various writers as one of the most valuable Indian medical products, possessing tonic, stimulant, and antipyretic properties. It was introduced into European medicine in 1771, and at one time enjoyed some celebrity under the name of "Lopez Root," but it has long since fallen into disuse. According to Brooks (Philippine Journal of Science, 1910, v., 442) this plant is common in the Philippines, but so far as is known is not used as a dye by the natives. The colouring matter it contains is berberine (Perkin and Hummel, Chem. Soc. Trans., 67, 413).
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