the pouch should be; but, though he excavated to a greater distance
than the depth of the original hole there was no sign of pouch or
jewels. Tarzan's brow clouded as he discovered that he had been
despoiled. Little or no reasoning was required to convince him of
the identity of the guilty party, and with the same celerity that
had marked his decision to unearth the jewels, he set out upon the
trail of the thief.

Though the spoor was two days old, and practically obliterated in
many places, Tarzan followed it with comparative ease. A white man
could not have followed it twenty paces twelve hours after it had
been made, a black man would have lost it within the first mile; but
Tarzan of the Apes had been forced in childhood to develop senses
that an ordinary mortal scarce ever uses.

We may note the garlic and whisky on the breath of a fellow strap
hanger, or the cheap perfume emanating from the person of the
wondrous lady sitting in front of us, and deplore the fact of our
sensitive noses; but, as a matter of fact, we cannot smell at all,
our olfactory organs are practically atrophied, by comparison with
the development of the sense among the beasts of the wild.

Where a foot is placed an effluvium remains for a considerable time.
It is beyond the range of our sensibilities; but to a creature
of the lower orders, especially to the hunters and the hunted, as
interesting and ofttimes more lucid than is the printed page to
us.

Nor was Tarzan dependent alone upon his sense of smell. Vision
and hearing had been brought to a marvelous state of development by