486 SCIENCE PROGRESS 



come out in the open. It is, however, a great satisfaction to 

 find opponents who have previously stated diametrically the 

 opposite, now giving my facts and conclusions, even though 

 there be no acknowledgment or even mention of my name. 

 This is the more curious as a steadily increasing number of the 

 ablest scientific men in this and other countries have favoured 

 these views, and text-book after text-book has adopted them. It 

 is obvious that any theory must explain the facts as they really 

 are. 



References 



i. Edkidge-Green (F. W.), Colour Blindness and Colour Perception. Inter- 

 national Scientific Series, 1891, 1909. Kegan Paul & Co., and previous 

 papers. 



2. An Analysis of the Results of the Sight Tests of the Board of Trade, 



Brit. Med.Journ. 1914. 



3. Demonstration of the Simple Character of , the Yellow Sensation, 



Journal of Physiology, 1 9 1 2 . 



4. The Simple Character of the Yellow Sensation, Journ. of Physiol. 1913. 



5. Edridge-Green (F. \V.) and Marshall (C. D.), Some Observations on so- 



called artificially produced Temporary Colour-blindness, Trims, of the 

 Ophthalmologic^ Society, 1909. 



6. Pole (W.), Trans. Roy. Soc. of Edin. 1893, p. 459. 

 Edridge-Green (F. W.), The Relation of Light Perception to Colour Per- 

 ception, Proc. Royal Society, 1910. 



Demonstration of a Method of Testing Hue Perception, Journ. of 



Physiol. 1908. 



Colour Perception Spectrometer, Joum. of Physiol. 1909. 



The Hunterian Lectures on Colour Vision and Colour Blindness, 191 1. 



Kegan Paul & Co. 



The Discrimination of Colour, Journ. of Physiol. 191 1. 



The Discrimination of Colour, Proc. Roy. Soc. 191 1. 



Dichromatisches Sehen, Archiv fiir die ges. Physiologic, 191 2. 



Dichromic Vision, Ophthalmoscope, 1914. 



Two Cases of Trichromic Vision, Proc. Roy. Soc. 1905. 



Trichromic Vision and Anomalous Trichromatism, Proc. Roy. Soc. 191 3. 



Trichromic or Three-unit Case of Colour-blindness, Trans. Ophth. Soc. 



1901. 



Evolution of the Colour Sense, Trans. Ophth. Soc. 1901. 



Colour Systems, Trans. Ophth. Soc. 1906. 



■ Observations on Hue-perception, Trans. Ophth. Soc. 1907. 



■ Observations with Lord Rayleigh's Colour-mixing Apparatus, Trans. 



Ophth. Soc. 1907. 

 Die Wahrnehmung des Lichtes und der Farben, Berliner Klin. 



Wochenschr. 1 909. 



Simultaneous Colour Contrast, Journ. of Physiol. 191 1. 



Simultaneous Colour Contrast, Proc. Roy. Soc. 191 2. 



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-i- Colour Adaptation, Proc. Roy. Soc. 1913. 



