CONTENTS. 



Page. I 



Botanical history and identity of the eoy bean 9 j 



Botanical classifications of soy-bean varieties 11 



Varietal characteristics of soy beans 12 , 



Habit of growth 12 



Foliage 13 



Pubescence 13 



Flowers 13 



Pods 14 



Seeds 14 j 



Frost resistance 15 : 



Period of maturity 16 



Changes in life period 19 



Pollination and hybridization 20 j 



Mutations 23 ^ 



Nomenclature and classification 24 j 



Early agricultural history in the United States 26 i 



Varieties introduced into the United States independently of the Department j 



of Agriculture or previous to 1898 27 j 



Enumeration 27 



ItoSan 28 



Mammoth 29 j 



Buckshot 291 



Guelph, or Medium Green 30 



Butterball 30j 



Kingston 31 



Samarow 31 



Eda 31 



Ogemaw, or Ogema , 31 



Varieties grown in Europe 32 



Early history 32 , 



Samarow 32; 



Etampes 32 



Chernie 32j 



"Yellow Riesen " 32i 



Buckshot 33] 



"Yellow " 33j 



"Brown" 33 



Butterball 33] 



S. P. I. No. 5039 33 



The soy bean in Asia 34i 



Asiatic sources of soy beans 34 1 



List of varieties 34: 



197 5 i 



