Cephas H. Sinclair, hydrographic and geodetic engineer in the Coast and Geodetic Survey, died suddenly in Washington on the night of Sunday, May 16, in the 73rd year of his age. He had been in falling health for several years, but was able to attend to official duties up to the day preceding his death.

Mr. Sinclair was born in Charlottesville, Virginia, December 4, 1847. He was educated at the University of Virginia, from which he graduated with the degrees of Civil Engineer, Mining Engineer, and Bachelor of Science.

He entered the field service of the Coast and Geodetic Survey as an aid November 14, 1873, and was engaged for many years in field surveys in all portions of the United States, chiefly in charge of parties engaged in triangulation, astronomical, and magnetic work.

For a number of years, ending with 1913, he was in charge of a party engaged in the survey of the boundary between the United States and Canada.

Mr. Sinclair was a man of great ability in his profession and performed valuable service for the Government. Of an agreeable personality and kindly disposition, he made many warm friends among his associates in the Survey.

Mr. Sinclair's wife and children died many years ago. He is survived by a brother and other relatives.

The funeral took place in Charlottesville, Virginia, on the afternoon of Tuesday, May 18, 1920.

---

C&GS BULLETIN, 5/1920