This subject index was started in 1908, and by 1914 three volumes (the third in two parts) had been published; however, this subject index was never completed. Volume 2, titled Mechanics, has some 200 entries under "Linkages." It is interesting to note that both of the Royal Society's monumental catalogs grew out of a suggestion made by Joseph Henry at a British Association meeting in Glasgow in 1855.

WEISBACH, JULIUS. The Mechanics of the Machinery of Transmission, vol. 3, pt. 1, sec. 2 of Mechanics of Engineering and Machinery, translated by J. F. Klein. New York, 1890 (ed. 2).

MECHANISMS AND MECHANICIANS

BARBER, THOMAS W. Engineer's Sketch-Book. London, 1890 (ed. 2).

HERKIMER, HERBERT. Engineer's Illustrated Thesaurus. New York, 1952.

PERIODICALS. Artizan, from 1843; Practical Mechanic and Engineer's Magazine, from 1841; Repertory of Arts and Manufactures, from 1794; Newton's London Journal of Arts and Science, from 1820. (The preceding periodicals have many plates of patent specification drawings.) The Engineer, November 10, 1933, vol. 156, p. 463, and Engineering, November 10, 1933, vol. 136, p. 525. (Recent English views questioning the utility of kinematics.)

TATE, THOMAS. Elements of Mechanism. London, 1851.

Contains figures from Lanz and Bétancourt (1808).

WYLSON, JAMES. Mechanical Inventor's Guide. London, 1859.

Contains figures from Henry Adcock, Adcock's Engineers' Pocket-Book, 1858.