e truth; it puts forth that side of the truth only. It
puts that side forth in a form which may not be in itself distorted or
exaggerated, but which practically becomes distorted and exaggerated,
because other sides of the same truth are not brought into their due
relation with it. The popular idea thus takes a shape which is naturally
offensive to men of strict precision, and which men of strict scientific
precision have naturally, and from their own point of view quite
rightly, risen up to rebuke. Yet it may often happen that, while the
scientific statement is the only true one for scientific purposes, the
popular version may also have a kind of practical truth for the somewhat
rough and ready purposes of a popular version. In our present case
scientific philologers are beginning to complain, with perfect truth and
perfect justice from their own point of view, that the popular doctrine
of race confounds race and language. They tell us, and they do right to
tell us, that language is no certain test of race, that men who speak
the same tongue are not therefore necessarily men of the same blood.
And they tell us further, that from whatever quarter the alleged popular
confusion came, it certainly did not come from any teaching of
scientific philologers.

The truth of all this cannot be called in question. We have too many
instances in recorded history of nations laying aside the use of one
language and taking to the use of another, for any one who cares for
accuracy to set down language as any sure test of race. In fact, the
studies of the philologer and those of the ethnologer strictly so called
are quite distinct, and they deal with two wholly different sets of
phenomena. The science of the ethnologer is strictly a physical science.
He has to deal with purely physical phenomena; his business lies with
the different varieties of the human body, and specially, to take that
branch of his inquiries which most impresses the unlearned, with the
various conformations of the human skull. His researches differ in
nothing from those of the zooelogist or the palaeontologist, except that
he has to deal with the physical phenomena of man, while they deal with
the physical phenomena of other animals. He groups the different races
of men, exactly as the others group the genera and species of living or
extinct mammals or reptiles. The student of ethnology as a physical
science may indeed strengthen his conclusions by evidence of other