PUBLISHING COMMITTEE. 
Prof. Z. Kawase, Bingakuhakuslxi, Director of the College (ex officio). 
Prof. C. Ishikawa, Ph. I)., BigaJcuhaJcushi. 
Prof. U. Suzuki, Nögakuhakushi. 
Assist. Prof. S. Kusano, EigalcuhaJcushi. 
» 
CONTENTS. 
Page 
I. Nagai :—A Genetico-Physiological Study on the Formation of Antlio- 
cyanin and Brown Pigments in Plants. With Plate I and two text- 
figures . 1 
S. Ikeno :—Studies on the Genetics of Flower-Colours in Portulaca 
grandiflora. With Plate II. 93 
All communications relating to this Journal should be addressed to the 
Director of the College of Agriculture. 
