In addition to his inventions of fire-arms, Colonel Colt invented a submarine battery, which was thoroughly tested by the officers of the United States Navy, and is said to be one of the most formidable engines for harbor defense ever known. He also invented a submarine telegraph cable, which he laid and operated with perfect success, in 1843, from Coney Island and Fire Island to the city of New York, and from the Merchants Exchange to the mouth of the harbor. His insulating material consisted of a combination of cotton yarn with asphaltum and beeswax; the whole was inclosed in a lead pipe. This was one of the most successful experiments of the early days of submarine telegraphy, and entitles Colonel Colt to a conspicuous place in the list of those who brought that science to perfection. After the permanent establishment of his business, in 1847 and 1848, Colonel Colt's success was rapid. He acquired a large fortune, and built an elegant and tasteful mansion in Hartford, where he resided, surrounded with all the luxuries of wealth and taste. In 1855, he married Miss Elizabeth Jarvis, daughter of the Rev. Dr. Jarvis, of Portland, Connecticut, a lady of great beauty and superior character and accomplishments. She still survives him. He repeatedly visited Europe after his settlement at Hartford, and as the excellence of his weapons had made his name famous the world over, he was the recipient of many attentions from the most distinguished soldiers of Europe, and even from some of the monarchs of the Old World. In 1856, being on a visit to Russia, with his family, he was invited with them to be present at the coronation of the Emperor Alexander II. He was decorated by nearly all the Governments of Europe, and by some of the Asiatic sovereigns, with orders of merit, diplomas, medals, and rings, in acknowledgment of the great services he had rendered to the world by his invention. He died, at his residence in Hartford, on the 10th of January, 1862, in the forty-eighth year of his age. The community of which he was a member lost in him one of its most enterprising and public-spirited citizens, and the country one of the best representatives of the American character it has ever produced. CHAPTER XX. SAMUEL F.B. MORSE. Samuel Finley Breese Morse is the eldest son of the late Jedediah Morse, one of the most distinguished Presbyterian clergymen of New England. He was born at Charlestown, Massachusetts, on the 27th of April, 1791, was carefully educated in the common schools of his native town, and at an early age entered Yale College, where he graduated in 1810. He exhibited an early fondness for art as well as studies of a scientific character, and while a student at Yale displayed an especial aptness for chemistry and natural philosophy. Upon leaving college he decided to adopt the profession of an artist, and was sent abroad to study under the tuition of West and Copley and Allston. [Illustration: SAMUEL F.B. MORSE.]