Chap. VI. 



Summary. l &7 



bavin* adapted them during past periods of tame: the adaptations 

 bein« aided in many cases by the increased use or disuse of parts 

 bein* affected by the direct action of the external conditions of 

 life and subjected in all cases to the several laws of growth and 

 variation. Hence, in fact, the law of the Conditions of Existence is 

 the higher law; as it includes, through the inheritance of former 

 variations and adaptations, that of Unity of Type. 







