New York: T. S. & J. D. Negus, 1915. First. hardcover. viii, 83pp. Folio, green cloth, cloth lightly soiled, corners bumped. New York: T. S. & J. D. Negus, 1915. First Edition. very good(-).
Most of the text consists of the nautical tables. Author was professor of celestial mechanics at Columbia University from 1903 to 1944. He also was chairman of the admissions committee of the New York Yacht Club for 25 years.