As the Tetons however rode at a hand-gallop, but a moment of time was necessary, after the ass began to walk, to remove them effectually from before the vision of his rider.

Without plan, expectation, or hope of any sort, except that of escaping from his dangerous neighbours, the Doctor first feeling, to assure himself that the package, which contained the miserable remnants of his specimens and notes was safe at his crupper, turned the head of the beast in the required direction, and kicking him with a species of fury, he soon succeeded in exciting the speed of the patient animal into a smart run.
He had barely time to descend into a hollow and ascend the adjoining swell of the prairie, before he heard, or fancied he heard, his name shouted, in good English, from the throats of twenty Tetons.

The delusion gave a new impulse to his ardour; and no professor of the saltant art ever applied himself with greater industry, than the naturalist now used his heels on the ribs of Asinus.

The conflict endured for several minutes without interruption, and to all appearances it might have continued to the present moment, had not the meek temper of the beast become unduly excited.

Borrowing an idea from the manner in which his master exhibited his agitation, Asinus so far changed the application of his own heels, as to raise them simultaneously with a certain indignant flourish into the air, a measure that instantly decided the controversy in his favour.