:b., 1921] HARRIS AND OTHERS SEEDLINGS OF PHASEOLUS 



95 



ic one hand and lines 98, 139, and 143 on the other is more apparent than 

 sal. All five lines agree in showing the frequencies for the dimerous plants 

 rgely concentrated in a single modal class with a slight but evident skew- 



EP/COTyt OF LIME /43 



= Z/ME7?OUS 

 = TTflMEROUS 



17 18 19 20 21 



/O 



FIG. 23. Percentage frequency distribution of number of bundles in central region of 

 picotyl. 



less toward higher numbers of bundles. In the case of lines 75 and 93 

 :here is a little over I percent of plants with fewer than the modal number 

 )f bundles, whereas in lines 98, 139, and 143 these do not occur in series of 

 Ae numbers sectioned. It is quite possible that the examination of a 



