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to +.80 in the trimerous and from +.76 to +-97 in the dimerous plantJ 

 The correlations for the dimerous plants are in all five cases slightly higher 

 than those for the trimerous plants. 



TABLE 2. Comparison of Correlation between Total Bundles and Primary Double Bundles, 

 rb p , and between Total Bundles and Intercalary Bundles, rbi, at Base of Hypocotyl 



The correlation between the total number of bundles and the number of: 

 primary double bundles is in general much lower. In line 98 the coefficient I 

 actually has the negative sign in the trimerous series. The differences 

 between the correlation coefficients for total bundles and intercalary bundles, 

 and for total bundles and primary double bundles, range from .27 to +.87 

 in the trimerous plants and from +.23 to +.61 in the dimerous plants/ 



It is clear that the two types of plants differ rather fundamentally in this 

 correlation. The correlation between the total bundles and the primary, 

 double bundles is very low in the trimerous plants. It is a much more: 

 substantial value in the dimerous plants. 



Pursuing this point one step farther, we may determine by a special 

 formula the relationship between the total number of bundles and the 

 deviation of the number of intercalary bundles from the number which 

 would be expected if the number of primary double bundles and intercalary, 

 bundles were in proportion to the total number of bundles formed. 



Determining the correlation between the total number of bundles, b, 



