eb., 1921] HARRIS AND OTHERS SEEDLINGS OF PHASEOLUS 



93 



4. Central Region of Epicotyl. The frequency distributions of the 

 umber of bundles occurring in the mid-region of the epicotyl appear in 

 able 15 for both the abnormal and the control plants. These distributions 



OF LJflf 7$ 



= 2 1 HERO US 

 = TJt/ME ROUS 



20- 



10- 



FIG. 21. Percentage frequency distribution of number of bundles in central region of 

 epicotyl. 



reduced to a percentage basis are represented graphically in figure 21 for 

 line 75, in figure 22 for line 98, and in figure 23 for line 143. The distributions 



