. Morton memorial; a history of the Stevens institute of technology, with biographies of the trustees, faculty, and alumni, and a record of the achievements of the Stevens family of engineers. with seeing in the air. In 1893 he published for the use of hisstudents A Sixty-Hour Course in Kinema-tic Drawing. He has made use of the strict mathemati-cal conception of Degrees of Freedom andConstraint in the study of mechanical move- ments. He is of opinion that the subjects ofmechanics and kinematics as applied to ma-chinery need to be entirely rewritten fromthe point of view of the system of coord
. Morton memorial; a history of the Stevens institute of technology, with biographies of the trustees, faculty, and alumni, and a record of the achievements of the Stevens family of engineers. with seeing in the air. In 1893 he published for the use of hisstudents A Sixty-Hour Course in Kinema-tic Drawing. He has made use of the strict mathemati-cal conception of Degrees of Freedom andConstraint in the study of mechanical move- ments. He is of opinion that the subjects ofmechanics and kinematics as applied to ma-chinery need to be entirely rewritten fromthe point of view of the system of coordinateswhich is elaborated in Sir Robert Balls greatmathematical work Theory of Screws. His most recent published article, describ-ing a rational method of comparing the rela-tive magnitudes of line and point contacts,appeared in the American Machinist ofFebruary 10, 1903. Other articles, the out-growth of his work in the Bureau of SteamEngineering, have appeared from time totime in the Journal of the American So-ciety of Naval Engineers. Mr. Williams is a member of the Chi Psiand Sigma Psi fraternities. Williamson, George Danforth (, 97),was born in Jersey City, N. J., February 11,. G. D. Williamson 1876; son of J. Q. Aymar and Elizabeth(Henderson) Williamson. He was with theConsolidated Gas Co., New York, 1898-1900; was inspector for the Middle StatesInspection Bureau, New York, 1900-02; andis now with Woodward & Williamson, in-surance agents, Jersey City, N. J. His workincludes the examination of boilers, engines,shafting, dynamos, motors, etc., testing offire appliances and automatic sprinkler equip-ments, and inspection of special hazards. Heis a member of the Chi Psi fraternity. 6i8 THE STEVENS INSTITUTE OF TECHNOLOGY Williamson, James Abeel (, 97), wasborn in Jersey City, N. J., May 13, 1875. Hewas in the employ of Colgate & Co-, soapmanufacturers, Jersey City, N. J., 1897! con-structing engineer with Charles H. Davis,New York, 1898; and has been with theIsbell-Po
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