296 A JOURNEY IN BRAZIL. 
an opportunity of accumulating a mass of new and interest- 
ing information on the many varieties of the colored races, 
produced by the crossing of Indians, negroes, and whites, 
which he has recorded not only in notes, but in a very com- 
plete series of photographs. Perhaps nowhere in the world 
can the blending of types among men be studied so fully 
as in the Amazons, where mamelucos, cafnzos, mulattoes, 
cabocos, negroes, and whites are mingled in a confusion that 
seems at first inextricable. I insert below a few extracts 
from his notes on this subject, which he purposes to treat 
more in detail, should he find time hereafter to work up 
the abundant material he has collected. 
" However naturalists may differ respecting the origin of 
species, there is at least one point on which they agree, 
namely, that the offspring from two so-called different 
species is a being intermediate between them, sharing the 
peculiar features of both parents, but resembling neither so 
closely as to be mistaken for a pure representative of the 
one or the other. I hold this fact to be of the utmost 
importance in estimating the value and meaning of the 
differences observed between the so-called human races. 
I leave aside the question of their probable origin, and 
even that of their number ; for my purpose, it does not 
matter whether there are three, four, five, or twenty 
human races, and whether they originated independently 
from one another or not. The fact that they differ by 
constant permanent features is in itself sufficient to justify a 
comparison between the human races and animal species. 
We know that, among animals, when two individuals of 
different sex and belonging to distinct species produce an 
offspring, the latter does not closely resemble either parent, 
but shares the characteristics of both ; and it seems to 
