(1) The first domestication of the horse, one of the greatest achievements of man in the animal kingdom, was not the work of a day; but like all other great accomplishments, was brought about by a gradual process of discoveries and experiments. . . . (2) Man, in all his inventions and discoveries, has almost invariably commenced with some simple principle, and gradually developed it from one degree of perfection to another. (3) The first hint that we have of the use of electricity was Franklin's drawing it from the clouds with his kite. (4) Now it is the instrument of conveying thought from mind to mind, with a rapidity that surpasses time. (5) The great propelling power that drives the wheel of the engine over our land, and ploughs the ocean with our steamers, was first discovered escaping from a tea-kettle. (6) And so the powers of the horse, second only to the powers of steam, became known to man only as experiments, and investigation revealed them. - P. R. Kincaid, from *The Problem Art of Taming and Training Wild & Victors Horses*.