no BIOMETRY 



into consideration, in combination with the doubtful- 

 ness of the assumption upon which the method is 

 based, it seems clear that its use will only give us a 

 roughly approximate view of the correlation actually 

 existing in the cases to which it is applied. Having 

 made this reservation, we may compare the values 

 given in the following table with those which appeared 

 in Table V. : 



TABLE VI. (FROM PEARSON). 



AVERAGE PARENTAL CORRELATION. 



Human eye colour ... ... ... 0-495 



Horse, coat colour ... ... ... 0-522 



Basset hound, coat colour ... ... 0-524 



Greyhound, coat colour ... ... 0-507 



AVERAGE FRATERNAL CORRELATION. 



Human eye colour ... 0-475 



Horse, coat colour ... 0*633 



Basset hound, coat colour Q'524 



Greyhound, red in coat 0700 



Greyhound, black in coat 0-660 



Thus if we use the term inheritance at present simply 

 to express the fact that a more or less definite 

 numerical value can be attached to the average amount 

 of resemblance between any specified pair of relatives, 

 we see that a considerable number of physical characters 

 appear to be inherited at approximately the same rate 

 in men and in animals. 



More than this, Professor Pearson has shown, by 

 the use of the same method as was applied to the case 

 of physical characters not quantitatively measurable, 

 that the average resemblance in mental characteristics 



