VARIATION AND HEREDITY 113 



.erations, and an inheritance includes all that. 

 an organism is, or has, to start with, in 

 yjRugTpf its Eereditarv relatipn. We cannot 

 compare organic inheritance to a patrimony; 

 for the organism and its inheritance arej to 

 begin with, one and the same. Nor do we 

 any longer think of heredity as a power or a 

 principle, as a fate or a force; wg study it 

 as a ffengtic relation, which is sustained by. 



Trmt.prin.1 hafti'q nnrn^ly 



as a relation of resemblances and 

 differences which can be measured and 

 weighed, or in some way computed. 

 The 



_ 



t.f) fofigpK..l|kft. while at the same time 

 opportunity is afforded for the individual 

 new departures which we call variations, 



persist and the ten- 

 hereoP 



^ 



so that it is confusing to make 

 an absolute antithesis between heredity and 

 variation. Heredity, seen in its fullest 

 sense, . is foe larger concept, and includes 

 both inertia __ and d^er^ence, both con- 

 p \Vhatever be the 



terms used, there are two complemental 

 facts: that like tends-Jo begeLlike, yet that 



way an 



individuality of its own. 



