258 BIBLIOGRAPHY 



Page of text 

 on which 

 reference 

 is made 



of chromogen by an oxidasc, is further supported by 

 phenomena connected with the behaviour of pigment in 

 alcohol and water solutions. See text. pp. 47, 119 



240. Keeble, F., Armstrong, E. F., and Jones, W. N., 'The 

 Formation of the Anthocyan Pigments of Plants. Part 6.' 

 Proc. R. Soc.. London, 1913, LXXXVII B, pp. 113-131. 



Purple pigments are obtained by treatment of flower 

 extracts with nascent hydrogen, and subsequent oxidation. 

 Suggestion that preliminary reduction plays a part in 

 pigment formation. pp. 13, 122, 123 



241. Molisch, H., Mikrochemie der Pflanze, Jena, 1913, 

 pp. 236-241. 



Microchemical reactions of anthocyanin; occurrence 

 as crystals, etc. 



242. Peche, K., 'Ueber eine neue Gerbstoffreaktion. und ihre 

 Beziehung zu den Anthokyanen,' Her. D. bot. Ges., Berlin, 

 1913, xxxi, pp. 462-471. 



A new microchemical reaction for tannins which gives 

 a colour resembling anthocyanin. Cells containing iron- 

 greening tannins give, with potash solution and formol, a 

 blue-green pigment which becomes red with acids, and is 

 similar to anthocyanin except in its solubilities. 



243. Tswett, M., 'Beitrage zur Kenntnis der Anthocyane. 

 Ueber kiinstliches Anthocyan,' Biochem. Zs., Berlin, 1913, 

 LVIII, pp. 225-235. 



Artificial anthocyanin-like substances can be obtained 

 from alcoholic extracts of many colourless parts of plants 

 by treatment with aldehyde and hydrochloric acid. See 

 text. p. 123 



244. Wheldale, M., 'The Flower Pigments of Antirrhinum 

 majus. 1. Method of Preparation,' Biochemical Journal, 

 Cambridge, 1913, vn, pp. 87-91. 



Preparation and purification of anthocyanin pigments 

 from varieties of Antirrhinum majus. See text. 



pp. 12, 58, 69, 113 



245. Willstatter, R., und Everest, A. E., ' Ueber den Farbstoff 

 der Kornblume,' Liebigs Ann. Chem., Leipzig, 1913, cccci, 

 pp. 189-232. 



Method of extraction and preparation of blue pigment 

 from Cornflower. Suggestions as to constitutional 'for- 

 mulae for red, purple and blue anthocyanins. See text. 



pp. 13, 45, 46, 47, 50, 52, 56, 58, 72, 112 



246. 1914. Atkins, W. R. G., 'Oxidases and their Inhibitors in 



Plant Tissues. Part 2. The Flowers and Leaves of Iris,'' 

 Sci. Proc. R. Soc., Dublin, 1914, xiv (N. S.), pp. 157-168. 



