1. Mary Whiton Calkins, _A First Book in Psychology_, p. 273. 2. Sully, _The Teacher's Handbook of Psychology_, p. 1. 3. _Ibid._, p. 54. 4. Hugo Muensterberg, _American Problems_, p. 35. 5. Gillette and Dana, _Cost Keeping and Management Engineering_, p. 1. 6. F.W. Taylor, _Shop Management_, para. 221. Harper Ed., p. 96. 7. F.W. Taylor, _Shop Management_, para. 221-231. Harper Ed., pp. 96-98. 8. Compare H.L. Gantt, No. 1002, A.S.M.E., para. 9. 9. Compare H.P. Gillette, _Cost Analysis Engineering_, pp. 1-2. 10. F.W. Taylor, _Principles of Scientific Management_, p. 37. 11. F.W. Taylor, _Shop Management_, para. 245. Harper Ed., p. 104. 12. For excellent example of special routing see: Charles Day, _Industrial Plants_, chap. VII. 13. C. Babbage, _Economy of Manufacturers_. p. 172. "The constant repetition of the same process necessarily produces in the workman a degree of excellence and rapidity in his particular department, which is never possessed by a person who is obliged to execute many different processes." 14. F.W. Taylor, _On the Art of Cutting Metals_, Paper No. 1119, A.S.M.E. 15. C.G. Barth, _Slide Rules for Machine Shops and Taylor System_. Paper No. 1010, A.S.M.E. 16. H.L. Gantt, _Work, Wages and Profits_, p. 19. 17. Adam Smith, _Wealth of Nations_, p. 2. "The greatest improvement in the productive powers of labor, and the greater part of the skill, dexterity, and judgment, with which it is anywhere directed, or applied, seem to have been the effects of the division of labor." Also p. 4. 18. H.K. Hathaway, _The Value of "Non-Producers" in Manufacturing Plants. Machinery_, Nov., 1906, p. 134. 19. Gillette and Dana, _Cost Keeping and Management Engineering_, p. 11. 20. Morris Llewellyn Cooke, _Bulletin No. 5, Carnegie Foundation for the Advancement of Teaching_, p. 15. 21. H.L. Gantt, _Work, Wages and Profits_, p. 120. ==================================================================== CHAPTER IV MEASUREMENT DEFINITION OF MEASUREMENT.--"Measurement," according to the Century Dictionary,--"is the act of measuring," and to measure is--"to ascertain the length, extent, dimensions, quantity or capacity of, by comparison with a standard; ascertain or determine a quantity by exact observation," or, again, "to estimate or determine the relative extent, greatness or value of, appraise by comparison with something else."