OTHER THEORIES OF SPECIES-FORMING. 231 



has an added chance of survival from the coincidence m-{-v', (2) 

 that where the variation is antagonistic in direction to the modifica- 

 tion, there is a diminished chance of survival from the opposition 

 m v\ and hence (3) that coincident variations will be fostered 

 while opposing variations will be eliminated. 



"8. If this be so, many of the facts adduced by Lamarckians 

 may be interpreted in terms of the survival and gradual establish- 

 ment of coincident variations by natural selection under the 

 favourable environing conditions of somatic modifications. 



"9. It is clear that there is nothing in this suggestion of a direct 

 relation between specific accommodation and coincident variation 

 which can be antagonistic to the indirect relation indicated above 

 in 6. 



"10. Correlated and coexistent variations would have the same 

 relations to coincident variations as obtain in other cases of natural 

 selection." 



