n of what passes in his mind, as his face is not mobile;
nor does he betray his feelings by involuntary actions. If he blushes,
as he sometimes does, the colour extends down the neck and is visible
in spite of his dusky skin. Laughter is never immoderate enough to
bring tears to the eyes. The head is nodded vertically in affirmation
and shaken laterally in negation only by the civilised Tarahumares.

There is a slight though undefinable odour about the Tarahumare. He
is not aware of it; yet he will tell you that the Mexican smells
like a pig, and the American like coffee, both offensive odours to
Tarahumares. They all love to feel warm, and may often be seen lying
in the sun on their backs or stomachs. Heat never seems to trouble
them. Young babies sleep on their mothers' backs without any covering
on their heads to protect them from the fierce rays of the summer
sun. On the other hand, the Tarahumare endures cold unflinchingly. On
an icy winter morning, when there are six inches of snow on the ground,
many a man may be seen with nothing on but his blanket fastened around
his waist, pursuing rabbits.

While their senses are keen, I do not consider them superior to
those of any well-endowed white man. To test eyesight, Sir Francis
Galton directs us to cut out a square piece of white paper one and
a half inches a side, paste it on a large piece of black paper, and
mark how far a person can distinguish whether the square is held
straight or diagonally. None of the Indians could distinguish the
different positions until they were within seven hundred and ten
feet. On another occasion, however, when I tested six individuals,
four men could tell the position of the square at a distance of nine
hundred and five feet. One of these had syphilis. They certainly
do not feel pain in the same degree as we do. On this point any
collector of hair could have reason to satisfy himself. Scientists
consider the hair a particularly distinguishing feature among the
races of men, not only in regard to its colour, but also as to its
texture. In fact, the human race is by some classified according to
the character of the hair of the head. Compared under the microscope
a section of the hair of a Chinaman or an American Indian is found to
be circular, that of a European oval in shape. As a rule, the flatter
the hair the more readily it curls, the perfectly cylindrical hair
hanging down stiff and straight. A section of the straight hair of a
Ja