uish the skull of the tuneful, melodious canary from that of
the chirping, inharmonious sparrow. Nor could he fail to mark the
constant difference between the form of the head of a song thrush and
that of the jackdaw; or to discern how the cuckoo's head is hollow
where the organ of the love of offspring is located, whilst the same
part presents a striking protuberance in the partridge. In the
dolphin, the porpoise, the seal, and many other animals, the male
could there be distinguished from the female by the form of the back
part of the skull, where the same organ lies. Nor could any one fail
to mark the form of head that is the invariable, and evidently
indispensable, concomitant of the ferocious and sanguinary temper of
the tiger, as well as the strong contrast which it presents to the
skull of the wild but gentle gazelle. How superior also the elevated
brain of the poodle dog, when compared with that of the indocile,
snarling cur! Thus in animals of the same species the most marked
disparity of form is easily discernible, on comparing the skulls of
such as are docile and gentle, with those of the dull and intractable.
The elevation of the one and the depression of the other are obvious.

"In an ethnological point of view that collection was very valuable.
What a striking contrast was presented there by the rounded form of
the skull of the fierce, indomitable American Indian, who is so averse
to intercourse with strangers, and the rather narrow, elongated head
of the indolent negro, who is devoted to social enjoyments. How wide
was the difference between the head of the Sandwich Islander or of the
Tahitian and that of the Australian or the Tasmanian. How much
superior to either of them were the heads of the civilized Incas of
Peru, which had not been submitted to the distorting process of
artificial compression. Neither could the wide disparity between the
Maori and the Gentoo escape the notice of the most careless observer.
And how immeasurably inferior in form were they all to the noble head
which is the issue of the mingling of the Celtic, Saxon, and Norman
races (imbued with an infusion of old Roman, blood), such as it is
found to be in these islands, and in the United States.

"Perhaps it may not be considered out of place if I relate a
circumstance of considerable interest to those who make it a point to
make strict inquiry as to the amount of knowledge which certain races
are capable of imbibing.

"Some twen