THE GENEALOGY OF ANIMALS 119 
which lived on the land of the Carboniferous epoch, 
“Tas well as on that of the Trias, we have evidence 
_ that one form of terrestrial life persisted, through- 
- out all these ages, with no important modification ? 
_ For my part, having regard to the small amount 
of modification (except in the way of extinction) 
_ which the Crocodilian, Lacertilian, and Chelonian 
_ Reptilia have undergone, from the older Mesozoic 
times to the present day, I cannot but put the 
existence of the common stock from which they 
sprang far back in the Paleozoic epoch; and I 
should apply a similar argumentation to all other 
groups of animals. 
[The remainder of this essay contains a discussion of questions 
of taxonomy and phylogeny, which is now antiquated. I have 
reprinted the considerations about the reconciliation of Teleology 
with Morphology, about ‘‘ Dysteleology,” and about the struggle 
for existence within the organism, because it has happened to 
me to be charged with overlooking them. 
In discussing Teleology, I ought to have pointed out, as I 
have done elsewhere (Life and Letters of Charles Darwin, vol. ii. 
_ p. 202), that Paley ‘‘ proleptically accepted the modern doctrine 
of Evolution,” (Natural Theology, chap. xxiii.). 1893.] 
