DARWIN AND DESCENT. 229 



" On my view of descent with modification, the origin 

 of rudimentary organs is simple " (p. 4 5 4). 



" On my view '' became " on the view " in i 869. 



Again : — 



" On the view of descent with modification," &c. 



(P-4SS)- 



Again : — 



" On this same view of descent with modification all 

 the great facts of morphology become intelligible " 

 (p. 456). 



Again : — 



" That many and grave objections may be advanced 

 against the theory of descent with modification through 

 natural selection, I do not deny '' (p. 4 5 9). 



This now stands, " That many and serious objections 

 may be advanced against the theory of descent with 

 modification through variation and natural selection, I 

 do not deny." 



Again : — 



"There are, it must be admitted, cases of special 

 difficulty on the theory of natural selection " (p. 460). 



" On " has become " opposed to ; " it is not easy 

 to see why this alteration was made, unless because 

 " opposed to " is longer. 



Again : — 



" Turning to geographical distribution, the diffi- 

 culties encountered on the theory of descent with 

 modification are grave enough." 



" Grave " has become " serious," but there is no 

 other change (p. 461). 



