22 



I. NAGAI 



If ^\■as uoted tliat the reduction colour of the extract of the leaf of the 

 pear aud that of the apple was somewhat different ; the former was orange 

 red, the latter more scarlet red, suggesting that different flavoues might be 

 present in them. 



In the leaf of 3Iorvs al/>a, which is \evy impoiiaut in sericulture, the 

 chromogenic substance F was found but uo- the other, while in the le;if of 

 Irifi Kampfe)-!, the reverse was the case, and in the latter, the clu-omc^en 

 content in the leaf was not con-elated with the coloiu- of the p.n'igone, some 

 of which are deeply coloured. 



Tablk 11. 



The chromogen content of the leaf of Mortis allxi und Iris Ktinnpferi. 



1. Nomenclature acconUng to liDiavAV, K. e'olor Mim.Uirds and Color Numt-ncL-iUin-, liilii. 



