July, 1921] 



THE SEEDLING OF PHASEOLUS VULGARIS 



347 



w 



19 

 IB 



II 

 16 

 IS 



14 

 13 

 12 

 II 



1C 



/43 



H= 2-688 + /-S7S B 

 E = 12-790 -/-0-S42 B 



SB! 

 LINE /39 



//= 4-790. + /-200 B 

 E = 11-634- 0-400 B 



I5\ 



13 



12 



II - 



(6 



-12 



L/A/E 93 



H= 5-743 + /-078B 

 E = 18-901 -0-523 B 



//= 6-331 + 0-949 B 

 E = 12-807+0-342 



a 



TOTAL BUA/3LES 



DIAGRAM 5. Regression of number of bundles in central region of hypocotyl and in 

 central region of epicotyl on total number of bundles at base of hypocotyl in trimerous 

 seedlings. Empirical means represented by solid dots for hypocotyl and by circles for 

 epicotyl. 



