30 NATURAL SCIENCE [July 1898 



when we picture to ourselves the nature of the altered character 

 in the struggle for existence which the new race introduced 



on 



with their swift movements, their gaping jaws and pointed teeth, 

 it is not astonishing that some forms should develop armour, even 

 at the risk of degeneration. On these points, however, we may 

 hope for further light from palaeontological research. 



This, then, brings my argument to a close. I am aware that 

 many of the points might have been more elaborately treated, but 

 enough, I think, is contained in this sketch to serve all present 

 purposes. The argument is quite clear, and so far as I can see 

 consequential. What it is worth is another matter. I, for one, 

 suspend my judgment. 



Henry M. Bernard. 



Strkatham, S.W. 



