I am a horse, and my range extends from the north to the south pole, and from east to

I am a horse, and my range extends from the north to the south pole, and from east to west, almost as far as the eye can reach. I am the companion of man, from the time he first handles a rein, until he leaves off riding. I am his faithful servant, and minister to his pleasures, as well as to his profits. I carry him swiftly and safely over the plain, and enable him to participate in the sports of the field. I watchfully guard the property he commits to my care, from midnight to morning, and save him from the toil of unremitting vigilance, by day. I am the partner of his toils, and the associate of his pleasures. I am his faithful servant, and contribute to all his purposes of profit or of pastime, from