As to making a natural system, or, I may say, a continuous system, in which one group 

 shall run, as it were, into another, even at the present day, and including the fossil animals and 

 birds, I believe to be impossible ; but that at some future time links may be discovered, either 

 fossil or recent, which may more nearly connect them than they are connected at present. 



THOS. C. EYTON. 



Eyton, 

 January, 1867. 



