Book iv

, 1892.)

[23] A.J. Culler: Interference and Adaptability. (Archives of Psychology, 1912.)

[24] The experiments are being conducted and will be published by Mr. L.W. Kline.

[25] Adolf Gerson: Die physiologischen Grundlagen der Arbeitsteilung. (Zeitschrift für Sozialwissenschaft, 1907.)

[26] Karl Bücher: Arbeit und Rhythmus. (Fourth Edition, Leipzig, 1909, p. 438.)

[27] Frank G. Gilbreth: Motion Study. (New York, 1911.)

[28] Taylor: The Principles of Scientific Management. (New York, 1911, p. 71.)

[29] The experiments are being conducted and will be published by Mr. E.R. Riesen.

[30] R. Herbertz: Zur Psychologie des Maschinenschreibens. (Zeitschrift für angewandte Psychologie, 1908, vol. 2, p. 551.)

[31] C.L. Vaughan: The Moter Power of Complexity. (Harvard Psychological Studies, vol. 2, 1906, p. 527.)

[32] G.M. Stratton: Some Experiments in the Perception of the Movement, Color, and Direction of Lights. (Psychological Review Monographs, vol. 10, 1908.)

[33] The experiments are being conducted and will be published by Miss L.M. Seeley.

[34] H. Münsterberg: Beiträge sur experimentellen Psychologie. (