OBITUARY. CHARLES ROBERT COSTER. Col. Charles Robert Coster died suddenly of angina pectoris Sunday night. Shortly before 10 o'clock he left his residence, 103 West Seventy-first-street, for a walk. He had hardly closed the door when his dog attempted to settle old scores with a neighbor's dog, and in the excitement of an attempt at separating them, Col. Coster was stricken. He died soon afterward at the Presbyterian Hospital, Seven- tieth-street. Col. Coster was the son of John H. Coster, and was born in this city Dec. 23, 1839. He had hardly begun a business life when the war broke out, and young Coster went to Washington as a private in the Tenth Company of the Seventh Regiment. On his return he was at once ap- pointed to a Lieutenancy in the First Battalion, Twelfth Infantry, then recruiting at Fort Hamilton, and with this regiment he served through the first Peninsular campaign. At Gaines's Mill he was severely wounded. Shortly afterward he resigned his office in the regular army to accept the Colonelcy of the One Hun- dred and Thirty-fourth New-York Volunteers, offered him by Gov. Morgan, and served with this regiment till very near the close of the war. His military record was brilliant at Gettys- burg, Chancellorsville, and the Wilderness. He was 22 years of age when his brigade comman- der was killed, and he commanded the brigade himself in Howard's Corps on Cemetery Ridge. Obtaining leave of absence he came home, and was married to a daughter of Augustus J. James of Albany. A Brigadier's commission awaited his return but his young wife objected so strongly to his rejoining the army that he resigned his commission. He was later made Provost Marshal in this city. Under President Grant he served two terms as Collector of In- ternal Revenue, and under Hayes and Arthur he was pension agent. In his civil offices he served as efficiently as in military affairs. For several years he had nbeen a member of the Real Estate Exchange. He leaves a widow and four children. George Washington Post, G.A. R., of which Col. Coster was a member, will at- tend the funeral in a body, at his late residence, Wednesday, at 10 A.M.