can be but little, if any, sterility between
the Esquimaux dog and the wolf, for otherwise they would not be used to
improve the breed. As Dr. Hayes says of these dogs, "reclaimed wolves they
doubtless are."[18]

North America is inhabited by a second kind of wolf, the prairie-wolf
(_Canis latrans_), which is now looked at by all naturalists as
specifically distinct from the common wolf; and is, according to Mr. J. K.
Lord, in some respects intermediate in habits between a wolf and a fox. Sir
J. Richardson, after describing the Hare Indian dog, which differs in many
respects from the Esquimaux dog, says, "It bears the same relation to the
prairie wolf that the Esquimaux dog does to the great grey wolf." He could,
in fact, detect no marked difference between them; and Messrs. Nott and
Gliddon give additional details showing their close resemblance. The dogs
derived from the above two aboriginal sources cross together and with the
wild wolves, at least with the _C. occidentalis_, and with European dogs.
In Florida, according to Bartram, the black wolf-dog of the Indians differs
in nothing from the wolves of that country except in barking.[19]

{23}

Turning to the southern parts of the New World, Columbus found two kinds of
dogs in the West Indies; and Fernandez[20] describes three in Mexico: some
of these native dogs were dumb--that is, did not bark. In Guiana it has
been known since the time of Buffon that the natives cross their dogs with
an aboriginal species, apparently the _Canis cancrivorus_. Sir R.
Schomburgk, who has so carefully explored these regions, writes to me, "I
have been repeatedly told by the Arawaak Indians, who reside near the
coast, that they cross their dogs with a wild species to improve the breed,
and individual dogs have been shown to me which certainly resembled the _C.
cancrivorus_ much more than the common breed. It is but seldom that the
Indians keep the _C. cancrivorus_ for domestic purposes, nor is the Ai,
another species of wild dog, and which I consider to be identical with the
_Dusicyon silvestris_ of H. Smith, now much used by the Arecunas for the
purpose of hunting. The dogs of the Taruma Indians are quite distinct, and
resemble Buffon's St. Domingo greyhound." It thus appears that the natives
of Guiana have partially domesticated two aboriginal species, and still
cross their dogs with them; these two species belong to a quite different
type from the North American and European wolve