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87. Ridgway, R., Color Standards and Color Nomenclature, Washington, 1912.

88. Rood, O. N., Constants of Color. ''Quart. Jour. of Sci.'', London, 13, p. 458; 1876.

89. Modern Chromatics. New York, 1879.

90. Rosa, E. B., Photometric Units and Nomenclature. ''Bull. of the Bur. of Stands''., 6, pp. 543-572; 1910.

91. Strutt, J. W., Some Experiments on Color. Nature, 3, pp. 235-236; 1871.

92. Titchener, E. B., A Text-Book of Psychology, New York, 1911.

93. Troland, L. T., Apparent Brightness; Its Conditions and Properties. ''Trans. of the Ilium. Eng. Soc.'', 11, p. 948, 1916.

94. The Psychology of Color in Relation to Illumination. ''Trans. of the Illum. Eng. Soc.'', 13, p. 21; 1918.

95. The Heterochromatic Differential Threshold for Brightness. ''Psychol. Rev.'', 25 pp. 324-329; 1918.

96. Uhler, H. S. and Wood, R. W., Atlas of Absorption Spectra, Washington, 1907.

97. Wratten Light Filters, 4th Ed. Revised, Eastman Kodak Company, Rochester, 1920.

98. Westphal, H., Unmittelbare Bestimmungen der Urfarben: ''Zeitschr. für Sinnesphysiol''. 44, pp. 182-230; 1910.