194 Luck, or Cunning ? 
Again :— 
“ On my theory these several relations throughout time 
and space are intelligible ; . . . the forms within each class 
have been connected by the same bond of ordinary 
generation ; . . . in both cases the laws of variation have 
been the same, and modifications have been accumulated 
by the same power of natural selection ’’ (p. 410). 
“On my theory ” became “ according to our theory ” 
in 1869, and natural selection is no longer a power, but has 
become a means. 
Again :— 
“I believe that something more is included, and that pro- 
pinquity of descent—the only known cause of the simi- 
larity of organic beings—is the bond, hidden as it is by 
various degrees of modification, which is partially revealed 
to us by our classification ” (p. 418). 
Again :— 
“Thus, on the view which I hold, the natural system is 
genealogical in its arrangement, like a pedigree” (p. 422). 
“On the view which I hold” was cut out in 1872. 
Again :— « 
‘We may feel almost sure, on the theory of descent, that 
these characters have been inherited from a common 
ancestor ”’ (p. 426). 
Again :— 
“On my view of characters being of real importance for 
classification only in so far as they reveal descent, we can 
clearly understand,” &c. (p. 427). 
“On my view ” became “ on the view ” in 1872. 
Again :— 
“The more aberrant any form is, the greater must be 
the number of connecting forms which, on my theory, have 
been exterminated and utterly lost ” (p. 429). 
The words “on my theory ” were excised in 1869. 
Again :— 
“ Finally, we have seen that natural selection , . . explains 
