THE STORY OF ARTIFICIAL SILK made a scanty living. They were very pOOT. When young John was nine, his father died. John went to work as a bobbin-boy. He never had any schooling, although he eventu- ally became one of the most learned men in Great Britain. He was fond of reading, and he found several good friends among his fellow-workers, who gave him lessons in the evening. When he was 16, he was struck with the beautiful orange colour of a dress worn by his little step-sister. At once, he resolved to be a dyer. He spent all his spare money, which was not much, for dyes. Soon after- wards, he became an apprentice in a dye- shop. At 23, he married Mary Wostenholme. On his way to buy a wedding licence, he stopped at an old bookstall and bought a book that shaped his career—" THE CHEMICAL PockET-Booxk,” by James Parkinson. This old and forgotten book was published in 1803. It set Mercer on fire to try new experiments in producing beautiful colours. 0