The affectionate regard and high respect which Professor Barton uniformly cherished for the person and character of this worthy relative,—who, on all occasions, evinced himself to be his sincere friend,—cannot be better manifested, than by citing his own words. In his dedication to Dr. Rittenhouse, of a dessertation, entitled, _A Memoir concerning the fascinating faculty which has been ascribed to the Rattle-Snake and other American Serpents_, is this passage—“In inscribing this Memoir to you, dear sir, I follow the regular course of my feelings, which, when I have received acts of friendship or kindness, ever lead me to acknowledge them. Whilst your example early implanted in me an ardent love of science, the assistance which you afforded me, by removing many of the obstacles that have opposed my advancement in life, has enabled me to devote a portion of my time to the cultivation of science; and thereby to increase the quantity of my happiness:” This was written just four months before the decease of our Philosopher. And in a subsequent inscription by the same gentleman,—that of his _New Views of the Origin of the Tribes and Nations of America_,—dedicated to Mr. Jefferson, and dated about a year after that event, he says: “The only dedications I ever wrote, were to two persons[297] whom I greatly esteemed and loved; the last, to a common friend, whose virtues and science endeared him to his country, and whose removal from us, we shall long have reason to deplore.” ----- Footnote 297: The first of these, in the order of time, was his eldest brother, the writer of these memoirs; the other was his uncle, Dr. Rittenhouse. -----