No. 640] 



BODY SIZE AND ORGAN SIZE 



391 



TABLE III 



(For plants below 16 grams m shoot weight, r + .591 ± .043 ; for 



the larger plants producing larger leaves, pods and seeds 

 and vice versa. This conclusion agrees with that of most 

 previous workers. 



A more intensive stud\^ of the correlation tables, how- 

 ever, reveals certain facts which do not harmonize with 

 this conclusion, and which suggest that the whole problem 

 is somewhat too complicated to be solved merely by de- 

 termining such a series of correlation coefficients as 

 appear in Table I. A study of the curves connecting the 

 means for organ size in the correlation tables from which 

 these constants have been derived shows that regression 

 is far from linear and that the character of the curve is 

 essentially the same in every case. The eight curves for 

 the means of organ size on body size in the mature plants 

 are shown in Fig. 1. In every case it is clear that as we 



