APR 29 1924 
^ m % + m 
m 
THE 
JOURNAL 
OF THE 
COLLEGE OF AGRIClJLlf. 
TOHOKU IMPERIAL UNIVERSITY, 
SAPPORO, JAPAN. 
VOL. VI, PART X. 
:k JE m ^ -t ~ n 
SAPPORO. 
DE&EMBEB, 1915. 
C4 
