100 INTRODUCTION. 
had had other results, it would still have remained 
to be decided, whether a litter wholly of wolf ex- 
traction was capable of domesticity. The specimens 
hitherto reduced to familiarity, had been all bred 
up in confinement ; those showing attachment, we 
believe, were, with one exception, she-wolves; and 
in no case were they ever sufficiently liberated to 
determine, whether, with all their docility, they 
would not have taken the road to the forest and 
resumed the character assigned them by Nature, on 
the first favourable opportunity, or as soon as the 
first case of excitement appealed to their sensa- 
tions. 
We leave it to physiologists to inform us of the 
facts, if such there be, in the whole circle of mam- 
miferous animals, where the influence of man, by 
education and servitude, has been able to develope 
and combine faculties and anatomical forms so dif- 
ferent and opposite as we sce them in different races 
of dogs, unless the typical species were first in pos- 
session of their rudiments. We do not pretend to 
deny a certain influence to education even on the 
external form, and to servitude and misery that 
degeneracy which will produce some corresponding 
decrease of size. But climate cannot have effected 
much difference in the growth, since the two ex- 
tremes are found both in hot and cold countries. 
Nor can food have had a material influence, since 
man, existing entirely on vegetables or on fish, 
retains all his faculties as well as when he subsists 
on flesh; and to a late period in the history of 
