YUZO HOSHINO 
287 
CONTENTS. 
Page 
Introduction 229 
I. Experiments with peas 231 
Experimental methods 231 
Preliminary experiments with peas 232 
Materials used 232 
Fj^ raising in 1908 233 
Fg raising in 1909 233 
F3 raising in 1910 236 
Experiments proper with peas 237 
Inheritance of the flowering time in the progenies of the parent 
varieties 239 
Raising in 1910 239 
Raising in 191 1 240 
Raisings in 191 2 and 191 3 242 
Inheritance of the flowering time in hybrid progenies 242 
Fj raising in 1910 242 
F^ raisings 243 
In 191 1 243 
In 1912 243 
Chief results obtained from the above two raisings 244 
F3 raisings 245 
In 1912 245 
In 1913 , 246 
Chief facts from F3 raisings 246 
F^raisings 249 
I" 1 91 3 249 
In 19 14 251 
Interpretation of the experimental results 256 
Two-factor hypothesis 256 
