VII.] 



DISCUSSION OF THE DATA OF STATURE. 



109 



I obtained the value for Fraternal Regression of f ; 

 that is to say, the unknown brother of a known man is 

 probably only two-thirds as exceptional in Stature as 

 he is. This is the same value as that obtained for the 

 Regression from Mid-Parent to Son. However para- 

 doxical the fact may seem at first, of there being such 

 a thing as Fraternal Regression, a little reflection will 

 show its reasonableness, which will become much clearer 

 later on. In the meantime, we may recollect that the 



FIG- .13. 



FRATERNAL REGRESSION 



R.F.F. 



64 63 68 70 72 



SPECIALS 



4 66 68 70 



72 





unknown brother has two different tendencies, the one 

 to resemble the known man, and the other to resemble 

 his race. The one tendency is to deviate from P as 

 much as his brother, and the other tendency is not 

 to deviate at all. The result is a compromise. 



As the average Regression from either Parent to the 

 Son is twice as great as that from a man to his Brother, 

 a man is, generally speaking, only half as nearly related 



