VII.] 



DISCUSSION OF THE DATA OF STATURE. 



109 



3 ' 



I obtained the value for Fraternal Eegression of 

 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 66 68 70 72 





SPECJALS 



64 66 68 70 72 



72 



70 

 68 

 66 



64s 





/ 



72 

 70 

 68 

 66 

 64i 







/ 7 



/ / 9 



/ . , / , 



11)1 



■//. , 



■ lit 



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 



