Passing now to the house standing in the angle of Winslow street, I am led to speak of its occupants for the purpose of making appropriate mention of Dr. Charles T. Jackson, a distinguished son of Plymouth, who was there born June 21, 1805. His father, Charles Jackson, married Lucy, daughter of John Cotton, in 1794, and his children, whom I remember, were Lucy, born, 1798, who married Charles Brown, Lydia, 1802, who married Ralph Waldo Emerson, and Charles Thomas. Mr. Brown, the husband of Lucy, lived many years in Constantinople, and rendered laborious and self-sacrificing service to the sick during a visitation of the plague in that city. Dr. Jackson studied medicine with Dr. James Jackson and Dr. Walter Channing of Boston, and graduated at the Harvard Medical school in 1829. In the same year he went to Europe, where he remained three years studying in Paris, and returned in 1832. For his scientific labors and researches he was made a fellow of the American Academy of Arts and Sciences. In 1836 he was appointed geologist of Maine, and was also appointed by Massachusetts to survey her Maine lands. In 1839 he was appointed geologist of Rhode Island, and in 1840 of New Hampshire. In 1844 and 1845, explored the southern shores of Lake Superior, and opened mines of copper. In 1847 he superintended for a time a survey of mineral lands of the United States in Michigan. When Professor S. F. B. Morse secured a patent for the telegraph in 1840, Dr. Jackson claimed that on board the ship Sully in 1832, in which he and Morse were passengers, he suggested the possibility of correspondence by means of electricity, and explained to Mr. Morse the method of applying electricity to telegraphic use. It is in my power to furnish to a certain extent a confirmation of Dr. Jackson’s claim, which, as far as I know, has not found its way into the literature of the telegraph. In 1846 I was a passenger from New York to Liverpool in the ship Liverpool, in which a man by the name of Blithen was mate, who was also mate of the ship Sully, in which Jackson and Morse were passengers in 1832. He told me that he remembered well when Dr. Jackson made the suggestion of the possibility of an electric telegraph, at the dinner table, and the interest with which Mr. Morse listened, and his questionings concerning a possible use of electricity in the manner proposed. Mr. Blithen said that it was evident that the subject was a new one to Mr. Morse, bearing on matters entirely outside of the profession of painter to which he belonged. The controversy upon the respective claims of Morse and Jackson never reached a definite settlement, except _sub-silentia_ by public opinion in favor of Morse.