342 



J. ARTHUR HARRIS 



DIAGRAM 4. Relationship between number of cotyledons and number of primordial 

 leaves in a tetracotyledonous race of Phaseolus vtilgaris. 



More mature series, r = -4337 .0197. 



c == 2.6704 -f o.i26o./z 

 Combined series, r = .4312 .0084. 



c = 2 -5954 + 0.1314 h 



The straight line showing the regression of number of cotyledons, c, 

 on total leaf homologs, h, is shown with the empirical means in dia 

 gram 5. 



Correlation between total leaf homologs and number of leaves: 



Less mature series, r = .9459 .0034. 



/ = 2.4595 -f 0.8586 h 



