350 The American Naturalist. [April, 
One further agency was necessary to man’s development—that 
he should become carnivorous. The apes are fruit-eaters, and 
lack the native fierceness and the aggressive disposition of the 
flesh-eating animals. Doubtless man’s ancestor was a fruit-eater, 
but new habits of life probably accustomed him to a mixed fruit 
and flesh diet at an early period, and the quest of animals for 
` food must have led him to. wider excursions and more active 
enterprise than in the case of any of his frugivorous kindred. 
Here was an agency calculated to bring him into new scenes and 
novel relations to nature, and thus greatly to increase the strain 
upon his faculties and the consequent activity of his mind. 
If man came from the ape, it seems certainly very probable 
that these were the channels of his coming, these the adaptations, 
the methods, andthe exigencies through which a frugivorous ape 
became an omnivorous man, with a brain like that of the ape in 
form but greatly developed in size, and faculties like those of the 
ape in quality, but immensely developed in width and height. 
From being the equal of the animals he became lord of the 
animals, their peer perhaps in body, their monarch in mind." 
1 The views veray in this paper are not offered as original, The argument from 
the social habits of man has been advanced by myself in a previous paper in the 
advancement, it has been dealt with se Prof. E. D. Cope in papers en meric “ The 
Method of Creation of Organic Types,” ‘‘ The Hypothesis of Evolution,” “ The Review 
of the Modern Doctrine of Evolution,” and others, which may be found in sg gn 
entitled “ Origin of the Fittest.” The influence of Use and ra Se agents in Evolution, 
over the world of brutes, and the influence of this struggle on the growth of the brain 
' and the a of intelligence: This view, so far as the writer knows, has not been. 
advanced be 

