482 THE ACCESSORY PIGMENTS CHAP. 17 



1933 Roche, J., Arch. phys. biol., 10, 91. 



1934 Tiselius, A., and Gross, D., Kolloid-Z., 66, 11. 

 1938 Eriksson-Quensel, I. B., Biochem. J., 32, 585. 



C. Flavones and Anthocyanins 



1918 Perkin, A. G., and Everest, A. E., Natural Organic Colouring Matters. 



Longmans, Green, London, 1918. 

 1922 Noack, K., Z. Botan., 14, 1. 

 1932 Karrer, P., in Klein's Handbuch der Pflanzenanalyse. Vol. Ill, 



Springer, Wien, 1932, p. 941. 



1935 Mayer, F., in Chemie der organischen Farbstoffe. 3rd ed.. Vol. II, 



Springer, Berlin, 1935, p. 134. 

 1938 Link, K. P., in Gilman's Organic Chemistry. Vol. II, Wiley, New 

 York, 1938, p. 114. 



