In a few years this ingenious man discovered the conditions upon which he could earn his bread, by a skill which did not suffer under the competition of united labor. He had made also a wooden clock. He carried about his globe and his clock, and "began to pick up some money about the country" by cleaning clocks. He became a skilled clock-cleaner. For six-and-twenty years afterward he earned his bread as an artist. He then became a scientific lecturer, and in connection with his pursuits, was also a globe maker. His name may be seen upon old globes, associated with that of Senex. The demand for globes must have been then very small, but Ferguson had learned that cheapness is produced by labor-saving contrivances. A pretty instrument for graduating lines upon the meridian ring, once belonging to Ferguson, is in use at this hour in the manufactory of Messrs. Malby and Son. The poor lad "who made a globe in three weeks" finally won the honors and riches that were due to his genius and industry. But he would never have earned a living in the continuance of his first attempt to turn a ball out of a piece of wood, cover it with paper, and draw a map of the world upon it. The nicest application of his individual skill, and the most careful employment of his scientific knowledge, would have been wasted upon those portions of the work in which the continued application of common routine labor is the most efficient instrument of production. Let us contrast the successive steps of Ferguson's first experiment in globe-making with the processes of a globe manufactory. A globe is not made of "a ball turned out of a piece of wood." If a solid ball of large dimensions were so turned, it would be too heavy for ordinary use. Erasmus said of one of the books of Thomas Aquinas, "No man can carry it about, much less get it into his head;" and so would it be said of a solid globe. If it were made of hollow wood, it would warp and split at the junction of its parts. A globe is made of paper and plaster. It is a beautiful combination of solidity and lightness. It is perfectly balanced upon its axis. It retains its form under every variety of temperature. Time affects it less than most other works of art. It is as durable as a Scagliola column.