Mr. Kneass died in office, August 27, 1840. A good engraving of him hangs in the Assayer’s Office, inscribed “to his friend Adam Eckfeldt, Chief Coiner,”—who had been chiefly instrumental in securing his appointment. III. Christian Gobrecht was appointed December 21, 1840, to fill the vacancy made by the death of Kneass. He was born in Hanover, York Co., Pa., December 23, 1785. In 1811 he went to Philadelphia, and became an engraver of bank notes, seals, calico printers’ rolls, bookbinders’ dies, etc. In 1836 he received an appointment as assistant to Mr. Kneass at the Mint, in which capacity he executed some important work. Among other similar performances he was highly commended for his Franklin Institute Medal. Christian Gobrecht continued in office until his death, July 23, 1844. IV. James B. Longacre was born August 11, 1794, in Delaware Co., Pa. He served an apprenticeship as a line engraver with George Murray, Philadelphia, and did some high class plate-work before he was free, in 1819. He was one of the originators of the _National Portrait Gallery of Distinguished Americans_, the first volume of which appeared in 1834. Longacre drew from life and engraved many of the portraits entire. Like his predecessors, he died in office—January 1, 1869. During his term Mr. Longacre was variously assisted by P. F. Cross, William Barber, Anthony C. Paquet, and William H. Key. Cross was born in Sheffield, England, served several years in the Mint here, and died in 1856. He engraved the obverse of the Ingraham medal. Paquet was born in Hamburg, 1814, emigrated 1848, served as assistant 1857 to 1864, died, 1882. He engraved the medals of Grant, Johnson, Buchanan, Everett, and the Life Saving Medals, with some others. Key is a native of Brooklyn, was appointed an assistant, 1864, and is still in the service. He executed the Kane Expedition and Archbishop Wood Medals. The changes and additions during the Longacre term were numerous and important, both as to alloys and denominations. The pattern pieces also record various experiments in the art of coining. V. William Barber, fifth Engraver of the Mint, was born in London, May 2, 1807. He learned his profession from his father, John Barber, and was employed on silver-plate work, after his emigration to this country. He resided in Boston ten years, and was variously employed in his line of work. His skill in this way came to the knowledge of Mr. Longacre, then Engraver of the Mint, and he secured his services as an assistant in 1865. In January, 1869, upon the death of Mr. Longacre, he was appointed as his successor, and continued in that position for the remainder of his life. His death, which resulted from severe chills, brought on by bathing at the seashore, occurred in Philadelphia, August 31, 1879.