36 EVOLUTION. 



Hottentot and a Newton. Dr. Gray gives instances 

 of the exhibition of mind in plants, as when they 

 catch and devour insects or reach out their tendrils 

 toward supports. Biichner in " Mind in Animals," 

 and Romanes in ** Animal Intelligence " give this 

 subject a very satisfactory treatment. 



As force is in the muscles so thought is in the 

 brain. The magnet, powder, steam, the sensitive 

 plant, the lancelet burrowing in the sand, and the 

 thinking man, all show the combination of force and 

 matter which constitutes the universe. Mind devel- 

 ops in the child from bare consciousness to the 

 thoughts of a philosopher. Why should it not have 

 developed in the race of man by gradual process ? 

 The difference between the mental operations of 

 animals and men is one of degree not of kind. 

 Animals think the same kind of thoughts that men 

 do as far as they extend. 



Speech, 



Evolution is manifest in speech and in human 

 language. The origin of speech dates from the time 

 of the development of the organs of the throat. 

 Animals have the power of communicating ideas to 

 each other, and we can observe the dawnings of 

 speech in their cries. Our domestic dogs are 

 descended from wolves and jackals, and have learned 

 to bark in four or five distinct tones. 



In language, we find the same law of Evolution 



