156 READINGS IN EVOLUTION, GENETICS, AND EUGENICS 
resemblance to that of man (including even the occasional appear- 
ance of the projecting point shown in the preceding woodcut). It is 
evident that the folding over 
of the tip of such an ear, 
unless it is changed greatly 
during its further develop- 
ment, would give rise to a 
point projecting inwards.”* 
The woodcut on page 157 
(Fig. 31) serves still further to 
show vestigial resemblances 
between the human ear and 
that of apes. The last two 
figures illustrate the general 
resemblance between the nor- 
mal ear of foetal man and the 
ear of an adult orangoutang. 
Fic. 30.—Foetus of an orang. Exact 
copy of a photograph, showing the form of The other two figures on the 
ear at this early stage. (From Romanes.) lower line are intended to 
exhibit occasional modifica- 
tions of the adult human ear, which approximate simian characters 
somewhat more closely than does thenormal type. It will be observed 
that in their comparatively small lobes these ears resemble those 
of all the apes; and that while the outer margin of one is not unlike 
that of the Barbary ape, the outer margin of the other follows those 
of the chimpanzee and orang. Of course it would be easy to select 
individual human ears which present either of these characters in a 
more pronounced degree; but these ears have been chosen as models 
because they present both characters in conjunction. The upper row 
of figures likewise shows the close similarity of hair-tracts, and the 
direction of growth on the part of the hair itself, in cases where the 
human hair happens to be of an abnormally hirsute character. But 
this particular instance (which I do not think has been previously 
noticed) introduces us to the subject of hair, and hair-growth, in 
general. 
8. Hair.—Adult man presents rudimentary hairs over most parts 
of the body. Wallace has sought to draw a refined distinction between 
this vestigial coating and the useful coating of quadrumanous 
animals, in the absence of the former from the human back. But even 
1 Descent of Man (2d ed.), pp. 15-16. 
