SYSTEM OF NATURE. 131 
compatible with that system, but essential to its com¬ 
pleteness. I feel no disposition to say of these that they 
interrupt the regularity of a series or disturb natural affi¬ 
nities. So confidently do I believe in the integrity and 
unity of the System of Nature, that I regard every anoma¬ 
lous form, whether recent or extinct, as a guide to some 
part before apparently obscure. 
k 2 
