face. Its summer pelage is a beautiful orange-fawn.
The winter coat is shed during May, and the animals lose their short
summer hair in late August and early September.

Both species have a greatly enlarged larynx from which the goitered
gazelle derives its name. What purpose this extraordinary character
serves the animal, I am at a loss to know. Certainly it is not to
give them an exceptional "voice"; for, when wounded, I have heard
them make only a deep-toned roar which was by no means loud.
Specimens of the larynx which we preserved in formalin are now being
prepared for anatomical study.

Although the two species inhabit the same locality, they keep well
by themselves and only once, on the Panj-kiang plain, did we see
them running together in the same herd; then it was probably because
they were frightened by the car. I doubt if they ever interbreed
except in rare instances.

The fact that these animals can develop such an extraordinary speed
was a great surprise to me, as undoubtedly it will be to most
naturalists. Had we not been able to determine it accurately by
means of the speedometers on our cars, I should never have dared
state that they could reach fifty-five or sixty miles an hour. It
must be remembered that the animals can continue at such a high
speed only for a short distance--perhaps half a mile--and will never
exert themselves to the utmost unless they are thoroughly
frightened. They would run just fast enough to keep well away from
the cars or our horses, and it was only when we began to shoot that
they showed what they were capable of doing. When the bullets began
to scatter about them they would seem to flatten several inches and
run at such a terrific speed that their legs appeared only as a
blur.

Of course, they have developed their fleetness as a protection from
enemies. Their greatest menace is the wolves, but since we
demonstrated that these animals cannot travel faster than about
thirty miles an hour, the antelope are perfectly safe unless they
happen to be caught off their guard. To prevent just this, the
gazelles usually keep well out on the open plains and avoid rocks or
abrupt hills which would furnish cover for a wolf. Of course, they
often go into the rolling ground, but it is usually where the slopes
are gradual and where they have sufficient space in which to protect
themselves.

The gazelles have a perfectly smooth, even run when going at full
speed. I have often seen them b