Feb., 1921I HARRIS AND OTHERS SEEDLINGS OF FHASEOLUS 
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3. Central Region of Hypocotyl. In the sections made in the central 
regions of the hypocotyl and of the epicotyl at both Cold Spring Harbor and 
Storrs, the total number of bundles was counted, no distinction being made 
between the bundles originating from the primary double bundles and those 
of intercalary origin. 
Fig. 20. Percentage frequency distribution of total bundles in central region of- 
hypocotyl. 
The frequency distributions are shown in table 11. The relative fre- 
quencies for line 75 are shown in figure 17. The form of the distributions in 
line 98 is in essential agreement with those in line 75 and is not represented. 
The distributions for line 93 are represented in figure 18. The distribution 
for line 139 is shown in figure 19. That for line 143 appears in figure 20. 
The conspicuous feature of these distributions is the wide variation in 
bundle number and the conspicuous skewness of the frequencies for the 
