6o WHAT EVOLUTION IS 



6. CONCLUSION 



We have now completed a brief sur- 

 vey of some of the more important 

 fields of evidence concerning descent 

 with modification. We have examined 

 this question in the light of compara- 

 tive anatomy, of embryology, of geol- 

 ogy, of zoogeography, and of the study 

 of rudimentary organs. In none of 

 these aspects of the problem has there 

 appeared reason for assuming that 

 special creation has been the method 

 by which the diversity of plants and 

 of animals at present on the globe has 

 been produced and in all of them there 

 has been shown either strong evidence 

 in favor of descent with modification 

 or a state of affairs open to ready in- 

 terpretation from this standpoint. 



The several lines of evidence that 

 have been considered in this connec- 



