Mace Moulton died, suddenly of heart disease April 27 at the Ansonia hotel, New York where he made his home. Mr. Moulton was one of the most successful graduates of the Thayer School, and an engineer of wide reputation. He was born in Manchester, N. H., Feb. 15, 1855, of a distinguished family, his father being a man of large scientific attain- ments, and his grandfather, whose name he bore, at one time a congressman from New Hampshire. Mr. Moulton came to Hanover in 1872, and entered the preparatory department then maintained by the Thayer School, on the discontinuance of which he continued his preparatory studies in the Chandler Scientific Department. His. studies were interrupted from time to time to engage in professional work. After graduation he was for six months, until March, 1879, assistant engineer in the department of maintenance of way, Eastern Railroad, at Salem, Mass. He was then for the next four years most of the time associated with C. Shaler Smith of St. Louis, the noted bridge engineer, who designed and built the first cantilever bridge in the United States. During this period he designed numerous important railroad bridges. From June, 1883, to December, 1884, he was principal assistant engineer to the Edge Moor Iron Works, Wilmington, Del. In 1885 he was chief assistant in the construction of the Kentucky and Indiana bridge over the Ohio river at Louisville. In 1886-7 he was for two years engineer of bridges of the Colorado and Midland Railway, designing and superintending the construction of all the bridges and buildings of the road between Colorado Springs and Leadville. For a year and a half in 1888-9 he was in private practice in Boston. In 1889-90, he was for two years consulting engineer of the Berlin Iron Bridge Co., East Berlin, Conn. From 1891 to 1896 he was chief engineer of the R. F. Hawkins Iron Works, Springfield, Mass., building many important railway and highway bridges and many iron and steel frames for buildings. From 1896 to 1903 he remained in Springfield, engaged in private practice, engaged in the design and construction of many steel structures throughout New England, and acting in a consulting capacity for various cities and railroads. Since 1903 he had been a consulting engineer in New York. Among his tasks was the reconstruction of the bridge across the Hudson at Poughkeepsie, an exceedingly difficult and compli- cated piece of engineering, which was accomplished with perfect success, the expenditure, nearly $1,500,000, being kept within the original estimate. In 1907 he was made president arid chiei engineer of the Millbrook Company and its allied companies, capitalized at $20,000,000, and aiming to provide rapid transit for the northern part of New York City and the adjacent parts of Westchester county. This posi- tion he held at the time of his death. Mr. Moulton's first wife, Emma Blaisdell of Hanover, died during their residence in Springfield, and he later married her sister, who survives him. There are three children,— Mace, Jr., who has been associated with his father in business, Thornton, a student at the University of Pennsylvania, and Mrs. Walter O. Greene of Wakefield, N. J.