[27] This work is compiled from a series of papers read and lectures delivered by the author before the Philadelphia Horological Society, 1896. [28] Abbott. The American Watchmaker and Jeweler, 1892, page 249. [29] Brant. Animal and Vegetable Fats and Oils, pages 297-299. [30] Adler Wright. Oils, Fats and Waxes, and Their Manufactured Products, p. 292-293. [31] "Friction and Lost Work in Machinery."