ART. 3. ï. ICHIMUEA : ON THE FOKMATION OF 



Table I. 



From these cheniieal reactions protaiitliocyaii and yellow 

 antboeyan may prol)ably be considered as some allied compounds 

 of tannin or modified ])licnol compounds, as Pfeffer^' remarks. 

 Indeed I have often detected a substance like protantbocyan in 

 the epithelial cells of white Hower petals of. many other plants, 



1) Pfetlér.— PH:mzen Physiologie. Ed. I. 1807, p. VÔÔ. 



