MARTIN, Charles Cyril, civil engineer, born in Springfield, Pennsylvania, 30 August, 1831. He was graduated at Rensselaer polytechnic institute in 1856, and then for a year was assistant in geodesy. His first professional appointment was as rodman on the Brooklyn water-works, from which place he advanced steadily until within two years he became assistant engineer. On the completion of this work, Mr. Martin entered the employ of the Trenton locomotive machine manufacturing company, in order to become familiar with iron-work and particularly with the construction of bridges. At the beginning of the civil war he was engaged in building an iron bridge across Savannah river on the Savannah and Charleston railroad. Subsequently he became superintendent of a factory of arms, and then was engaged as an expert in conducting a series of experiments for the purpose of determining the respective merits of horizontal and vertical tubular boilers in the United States navy. Mr. Martin superintended the laying of the forty-eight-inch water-main along Atlantic avenue to the Ridgewood reservoir, through which the water-supply of Brooklyn has since been obtained. He then became chief engineer of Prospect park, and there introduced a system of road-building and sub-drainage sewers that has proved eminently successful, also bringing to a completion the great park well, then the largest in the world. On the accomplishment of this work he became first assistant engineer of the New York and Brooklyn bridge, and after the structure was thrown open to the public, in May, 1883, was made chief engineer and superintendent, which office he still (1888) holds. Mr. Martin is a member of the American society of civil engineers, and has published reports in connection with his work.