report upon this subject was as follows: “The coinage of the silver dollar-piece, the history of which is here given, is discontinued in the proposed bill. It is by law the dollar unit; and, assuming the value of gold to be fifteen and one-half times that of silver, being about the mean ratio for the past six years, is worth in gold a premium of about three per cent., its value being $1.03.12, and intrinsically more than seven per cent. premium in our other silver coins, its value thus being $1.07.42. The present laws consequently authorize both a gold dollar unit and a silver dollar unit, differing from each other in intrinsic value. The present gold dollar-piece is made the dollar unit in the proposed bill, and the silver piece is discontinued.” The first Director of the Mint under this new law, was the Hon. Henry R. Linderman. The title of the chief officer at Philadelphia being changed to Superintendent—the first incumbent with that title was the Hon. James Pollock. Biographical notices of these officers will be found in their appropriate place in this volume. DIRECTORS OF THE MINT. DAVID RITTENHOUSE, FIRST DIRECTOR OF THE MINT. Entering the Cabinet, the portraits of the different Directors attract attention. That of David Rittenhouse is the copy of a painting by Charles Willson Peale. Mr. Rittenhouse was appointed by Washington, April 14, 1792, and remained in charge of the Mint until June, 1795, when his declining health compelled him to resign. At an early age he indicated mechanical talent of a high order in the construction of a clock, and his studies from that time were principally mathematical. His genius soon attracted attention, and he was appointed by the colonial governor a surveyor, and in that capacity determined the famous Mason and Dixon line. He succeeded Benjamin Franklin as President of the American Philosophical Society. Mr. Barber, late Engraver of the Mint, executed a bronze medal of Dr. Rittenhouse. Possibly, excepting Duvivier’s head of Washington after Houdon, it cannot be surpassed in the Cabinet. The engraver had a very fine subject, and treated it in the highest style of art. On the obverse is “David Rittenhouse,” with date of birth and death. On the reverse, inscription, “He belonged to the whole human race.”—“Wm. Barber.” This beautiful memento is highly prized. HENRY WILLIAM DESAUSSURE, SECOND DIRECTOR OF THE MINT.