Morphology. 93 
way bear some record of its own descent from other 
species ; and the more closely the structure of any 
species is examined anatomically, the more numerous 
are such records found to be. Thus, for example, of 
all organisms that of man has been most minutely 
investigated by anatomists; and therefore I think it 
will be instructive to conclude this chapter by giving 
a list of the more noteworthy vestigial structures 
which are known to occur in the human body. I will 
take only those which are found in adult man, reserving 
for the next chapter those which occur in a transitory 
manner during earlier periods of his life. But, even as 
thus restricted, the number of obsolescent structures 
which we all present in our own persons is so remark- 
able, that their combined testimony to our descent from 
a quadrumanous ancestry appears to me in itself con- 
clusive. I mean, that even if these structures stood 
alone, or apart from any more general evidences of 
our family relationships, they would be sufficient to 
prove our parentage. Nevertheless, it is desirable to 
remark that of course these special evidences which I 
am about to detail do not stand alone. Not only is 
there the general analogy furnished by the general 
proof of evolution elsewhere, but there is likewise 
the more special correspondence between the whole 
of our anatomy and that of our nearest zoological 
allies. Now the force of this latter consideration is so 
enormous, that no one who has not studied human 
anatomy can be in a position to appreciate it. For 
[ without special study it is impossible to form any ad- 
equate idea of the intricacy of structure which is pre- 
sented by the human form. Yet it is found that this 
| enormously intricate organization is repeated in all its 
