In fact, about this time he appears to have been pondering on many practical methods to simplify work. He visited the stone and marble quarries in Devonshire and found that the digging and raising of the heavy products was extremely hard work. His first invention was a mill for sawing marble and stone, which proved so successful that when Fulton returned to London in the autumn he sent his model to the Society of Arts, Commerce and Manufactures and received a silver medal and the thanks of the society. Two talents were now striving for expression in Fulton’s active mind, art and science. One or the other had to have his full devotion; and about this time he seems to have laid aside his brushes, with all their charm and the rewards which he was just beginning to realize, and to have deliberately taken up the practical problems of invention. This change was not because he did not love art, for throughout the remainder of his life he continued, from time to time, to paint portraits; he was ever a devoted patron and friend of art, but there was not time for both professions, and that of the inventor now made the stronger appeal. The everyday needs were those which won Fulton’s earliest attention. He made a machine for spinning flax, perhaps in thought of his patient mother at home, working at her old-time spinning-wheel; and he next produced a machine for making rope. It stood in a room forty feet square and could be worked by one man, twisting cordage of any size and winding rope yarn on spools. In these inventions Fulton saw an opportunity to help mankind to better and easier methods of work, and also a way of securing a competence. His vision was wide; humanity was one family, and the round world provided a vast field for labor. It is not probable that he could have gained this view of life if he had tarried in quiet Lancaster. [Illustration: THE WASHWOMAN. The earliest known drawing by Robert Fulton. Owned by the Estate of Joseph Bringhurst.] He stayed in Devonshire nearly two years, although he returned to London for occasional visits. From Devonshire he went to Birmingham, a town of industrial importance, where he studied the method of the Duke of Bridgewater for building canals from that point to the seaports of England. From that time on his mind was concerned with plans for better means of transport. The years 1792 to 1796 were filled with new activities, new plans, new friends, new places of residence. He visited France, he toured Devonshire, he went to Birmingham and Manchester, the most important manufacturing centers in England where machinery of the highest type then known was in use.