In all his inventions and discoveries
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. The first hint that we have of the use of electricity was Franklin's drawing it from the clouds with his kite. Now it is the instrument of conveying thought from mind to mind, with a rapidity that surpasses time. 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. 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.
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