260 BIBLIOGRAPHY 



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254. Wheldale, M., and Bassett, H. LI., 'The Flower Pig. 

 merits of Antirrhinum majus. 3. The Red and Magenta 

 Pigments,' Biochemical Journal, Cambridge, 1914, viu, 

 pp. 204-208. 



Purification and analyses of anthocyanins. See text. 



pp. 12, 46, 50, 58, 69, 122 



255. Wheldale, M., and Bassett, H. LI., 'On a supposed 

 Synthesis of Anthocyanin,' J. Genetics, Cambridge, 1914, 

 iv, pp 103-107. 



Criticism of a paper by Everest who maintains that 

 natural anthocyanins can be obtained by reduction of the 

 flavones. See text. pp. 15, 124 



256. Willstatter, R., 'Ueber die Farbstoffe der Bliiten und 

 Fruchte,' SitzBer. Alt. Wiss., Berlin, 1914, pp. 402-411. 



Preparation and analyses of anthocyanins from Del- 

 phinium and other flowers, and fruits of Grape Vine, 

 Bilberry and Cranberry. Suggestions for the constitution 

 of anthocyanin. See text. pp. 13, 45, 58, 76 



257. Willstatter, R., und Mallison, H., 'Ueber die Verwandt- 

 schaft der Anthocyane und Flavone,' SitzBer. Ak. Wiss., 

 Berlin, 1914, pp. 769-777. 



Constitution for anthocyanins suggested. Antho- 

 cyanins regarded as forming a reduced series from flavones. 

 Production of anthocyanin experimentally by reduction of 

 a flavone. See text. pp. 13, 15, 45, 58, 76, 124 



258. 1915. Atkins, W. R. G., 'Oxidases and Inhibitors in Plant 



Tissues. Part 4. The Flowers of Iris,' Sci. Proc. R. Soc., 

 Dublin, 1915, xiv (N. S.), pp. 317-327. 



Further observations on the distribution of oxidases in 

 Iris flowers ; it is found that the distribution does not 

 coincide with that of anthocyanin. Difference possibly 

 due to inhibitors of oxidases. p. 119 



259. Cockerell, T. D. A., 'Characters of Helianthus,' Torreya, 

 Lancaster, Pa., 1915, xv, pp. 11-16. 



Some reactions of Helianthns anthocyanin are described. 



260. Everest, A. E., 'Recent Chemical Investigations of the 

 Anthocyan Pigments and their Bearing upon the Pro- 

 duction of these Pigments in Plants,' J. Genetics, Cam- 

 bridge, 1915, iv, pp. 361-367. 



Chiefly a summary of Willstatter 's work. 



261. Everest, A. E., 'The Anthocyan Pigments,' Sci. Progr., 

 London, 1915, ix, pp. 597-612. 



General review of work on the subject. 



262. Schlemann, E., 'Neuere Arbeiten iiber Bildung der 

 Bliitenfarbstoffe. Sammelreferat vom Standpunkte der 



