CHAPTER XXII. 



The Evidence Furnished by Embryology. 



HTHE preceding pages of this "Outline" have been directed 

 to a study of the progressive history of all life from the 

 first original life cell to the present time. The changes in 

 this life history have been so gradual and they have covered 

 such long periods of time that they can only be classified in 

 periods of geologic time. They are blended together like 

 the colors of a rainbow. The fact of these changes cannot 

 be denied when they are subjected to an analysis based on 

 scientific tests. Progressive adaptations have taken place 

 but the basic laws of Nature have never changed. If Evolu- 

 tion was Nature's plan in the beginning, it is now and ever 

 will be the same plan. Any attempt to deny the laws of 

 Nature challenges the laws of reason and the laws of God. 



No other branch of science has furnished more convinc- 

 ing proofs of the methods of evolutionary growth than has 

 that of Embryology. Here we can see the processes and 

 changes of life's physical development taking place. All 

 life is simply repeating the life processes of the past. These 

 processes not only repeat the actions of the primitive forms 

 through which all life has passed but, in addition thereto, 

 they repeat all the actions gained by adaptation and modi- 

 fication in the development of the particular species. 



Just as it was in the beginning so it now is that all life 

 starts in the same way — from a single cell. The body of 



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