442 Darwin, and after Darwin. 
of time on the one hand, and with degrees of evolution, of 
change of environment, &c., on the other. Or, in the 
words of Le Conte, when dealing with this very subject, ‘It 
is impossible to conceive a more beautiful illustration of 
the principles we have been trying to enforce*.” 
' Evolution and tts Relation to Religious Thought, p. 194. 
