Some horses, however, are so well trained that they look sharp out for these holes, which are generally found to be most numerous on the high and dry grounds.

But in spite of all the caution both of man and horse many ugly falls take place, and sometimes bones are broken.
They had not gone far after this accident when an antelope leaped from a clump of willows, and made for a belt of woodland that lay along the margin of a stream not half-a-mile off.
"Hurrah!" cried Dick, forgetting his recent fall.

"Come along, Crusoe." And away they went again full tilt, for the horse had not been injured by its somersault.
The antelope which Dick was thus wildly pursuing was of the same species as the one he had shot some time before--namely, the prong-horned antelope.

These graceful creatures have long, slender limbs, delicately-formed heads, and large, beautiful eyes.

The horns are black, and rather short; they have no branches, like the antlers of the red-deer, but have a single projection on each horn, near the head, and the extreme points of the horns curve suddenly inwards, forming the hook or prong from which the name of the animal is derived.