But Rob Fulton had remarkable talents in more lines than one. His playmates had nicknamed him "Quicksilver Bob" because he was so fond of buying that glittering metal and using it in various ways. The name suited him well, for he could turn from one occupation to another, and appeared to be equally good in each. Usually, however, when he was not inventing he was learning how to paint, and he had a number of teachers, one of whom was the famous Major Andre. The little town of Lancaster was an important place during the Revolution. In 1777 the Continental Congress had held its sessions in the old court-house there, and during the whole time of the war the town was famous as the depot of supplies for the army. A great deal of powder was stored in the town, and rifles, blankets, and clothing were manufactured there in large quantities. In the autumn of 1775 Major Andre, who had been captured while on his way to Quebec, was brought to Lancaster for safe keeping. He was allowed certain liberty on parole, and lived in the house of a near neighbor of the Fultons, named Caleb Cope. Major Andre was very fond of sketching, and spent much of his time in the fields painting pictures of the picturesque little village. No sooner had Rob Fulton heard of the English major's skill with colors than he hunted him up and asked for a few lessons. Andre was a very amiable young man, and took a great liking to the boy. He gave him many lessons in drawing, and also in the use of colors, and young Fulton learned rapidly under his tutoring. Andre was also in the habit of playing marbles and other games with Rob and his young friends, and the boys found him delightful company. At about the same time one of Robert's playmates learned a new way of mixing and preparing colors, using mussel-shells to show them off. This boy carried the shells covered with his new paint to school one day and showed them to Robert. No sooner had young Fulton seen them than he begged to be taught how they were made, and immediately started to work mixing his own colors. The Revolution had made it very difficult to obtain painting materials from abroad, and almost all the paints the boys used were home-made. Fulton now began to study the making of colors, and in a very short time was able to add to his stock.