1 6 Permanence and Evolution. 



To give an instance. The European cow and 

 the humped cow differ according to Blyth (cited 

 Darwin, "Animals and Plants," vol. i. p. 79) 

 in the shape of their ears, in the point where the 

 dewlap commences, in the typical curvature of 

 their horns, etc., and in the one being born with 

 teeth protruding through the jaws, the other not 

 so ; not to mention the presence or absence of 

 a hump and important osteological differences 

 mentioned by Riitimeyer (genus Bos). From 

 these reasons, Darwin conceives that they must 

 have originated from separate wild stocks ; but 

 yet of course, in accordance with his funda- 

 mental hypothesis, supposes that at some period 

 they diverged from one original form. But I 

 do not see how in this case the supposition of 

 more time is of any use. If we knew that these 

 characters were producible in a small degree, 

 there would be some sense in the supposition 

 that in a sufficient length of time they might 

 be increased to a vast extent But as we have 



