[10]. F.W. Taylor, Shop Management, para. 61. Harper Ed., p. 33.

[11]. Industrial Engineering, Jan., 1913.

[12]. F.W. Taylor, Shop Management, pp. 398-391. Harper Ed., p. 179. Compare, U.S. Bulletin of Agriculture No. 208. The Influence of Muscular and Mental Work on Metabolism.

[13]. President's Annual Address, Dec., 1906. Vol. 28, Transactions A.S.M.E.

[14]. American Journal of Physiology, 1904, XI, pp. 145-170.

[15]. R.T. Dana, For Construction Service Co., Handbook of Steam Shovel Work, p. 161. H.P. Gillette, Vol. I, p. 71, A.S.E.C.

[16]. F.W. Taylor, Vol. 28, A.S.M.E., Paper 1119, para. 68.

[17]. Hugo Münsterberg, American Problems, p. 37.

[18]. G.M. Stratton, Experimental Psychology and Culture, p. 59.

[19]. Henry Metcalfe, Cost of Manufactures.