contents. 
Page. 
Summary 4 
Introduction 8 
Previous investigations 10 
Materials and methods 11 
Growth habit in beans 15 
Growth curves 24 
Inheritance of determinate and indeterminate habits of 
growth 30 
Inheritance of number of internodes 31 
Calculation of internode length 38 
Inheritance of internode length 44 
Factors for plant height — their segregation and possible 
modification in crosses 56 
Literature cited 64 
Tables 66 
