INHERITANCE IN MANKIND 



5S 



Mendelian research, and the sport may transmit his 

 qualities to his descendants, estabhshing perhaps a 

 definite breed, perhaps a transient strain. 



In a mixed race like our own, the different types 



o 



JS J^ 35 36 ^57 38 39 W 91 ^2 ^^3 f^ f5 96 '97 -a? 



INCHES OF Chest Measureme/^t 



Fig. 4. 



pass by such insensible gradations into each other, 

 that the population for some purposes may be treated 

 as a homogeneous strain showing wide variations. 

 Almost any character of a large section of the 

 people, when its variations are plotted, gives a curve 

 approximating to a normal curve of error. The 

 chest measurement of Scottish soldiers (Fig. 4), already 

 considered on page 28, or the marks gained by 



