[23] Proceedings N. E. Cotton Manufacturers' Association, Nov. 28, 1880.
[24] The average teaspoon holds 5 cubic centimeters.
[25] 1 millimeter = .039 + inch.
[26] Thurston. Friction and Lost Work in Machinery.
[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."