While in London, as a wandering young journeyman printer, he taught an acquaintance, Wygate, to swim in two lessons. Returning from Chelsea with a party of Wygate’s friends, he gave them an exhibition of his skill, going through all the usual tricks in the water, to their great amazement and admiration, and swimming from near Chelsea to Blackfriars, a distance of four miles. Wygate proposed that they should travel through Europe, maintaining themselves by giving swimming-lessons, and Franklin was at first inclined to adopt the suggestion. Just as he was on the eve of returning to Pennsylvania, Sir William Wyndham, at one time Chancellor of the Exchequer, having heard of his swimming feats, wanted to engage him to teach his sons; but his ship being about to sail, Franklin was obliged to decline. If he had remained in England, he tells us, he would probably have started a swimming-school. When forty-three years old, retired from active business, and deep in scientific researches, he lived in a house at Second and Race Streets, Philadelphia. His garden is supposed to have extended to the river, where every warm summer evening he used to spend an hour or two swimming and sporting in the water. This skill in swimming and the agility and grace which Franklin displayed in performing feats in the water are good tests of general strength of muscles, lungs, and heart. So far as can be discovered, only one instance is recorded of his using his physical power to do violence to his fellow-man. He had a friend named Collins, rather inclined to drink, who, being in a boat with Franklin and some other youths, on the Delaware, refused to take his turn at rowing. He announced that the others should row him home. Franklin, already much provoked at him for not returning money which he had lent him, and for other misconduct, insisted that he row his share. Collins replied that Franklin should row or he would throw him overboard, and, as he was approaching him for that purpose, Franklin seized him by the collar and breeches and threw him into the river, where they kept him till his strength was exhausted and his temper cooled. Until he was forty years old Franklin worked on his own account or for others as a printer, which included hard manual labor; for, even when in business for himself, he did everything,--made his own ink, engraved wooden cuts and ornaments, set the type, and worked the heavy hand-presses. His pleasures were books, the theatre, and love-affairs. Except swimming, he had no taste for out-door amusements. Sport, either with rod, gun, horse, or hound, was altogether out of his line. As he became prosperous and retired from the active business of money-getting, he led an entirely sedentary life to the end of his long career.