EVIDENCES FROM MORPHOLOGY 153 
poid apes continue to present the rudimentary vestiges of a tail in a 
few caudal vertebrae below the integuments, we might well expect to 
find a similar state of matters in the case of man. And this is just 
Fic. 25.—Diagrammatic outline of the human embryo when about seven 
weeks old, showing the relations of the limbs and tail to the trunk. (After Allen 
Thompson.) 1, the radial, and «, the ulnar, border of the hand and forearm; 
t, the tibial, and f the fibular, border of the foot and lower leg; au, ear; s, spinal 
cord; v, umbilical cord; 5, bronchial gill slits; c, tail. (From Romanes.) 
SI REE Lyrsenprccla NY Mereseet 
CuRVATORE coceyeis Mus. Cockyx. 
Fic. 26.—Front and back view of adult human sacrum, showing abnormal 
persistence of vestigial tail muscles. (From Romanes.) 
what we do find, as a glance at these two comparative illustrations 
will show (Fig. 24). Moreover, during embryonic life, both of the’ 
anthropoid apes and of man, the tail much more closely resembles 
