384 TITCHENER AND PYLE— ON THE AFTER-IMAGES []u\y^3, 



tigsten objcctiven Farben, welche existiren, die reinen Spectral- 

 farben, im unermiideten Auge noch nicht die gesattigste Farben- 

 empfindung hervorrufen, welche iiberhaupt moglich ist, sondern dass 

 wir diese erst erreichen, vvenn wir das Auge gegen die Complemen- 

 tarfarbe unempfindlich machen." '^ There was, then, no a priori 

 reason to doubt Tschermak's result; on the contrary, we thought it 

 probable that under conditions which were unfavorable to the ap- 

 pearance of the stimulus-color, but favorable to the appearance of 

 its complementary, the subliminally colored stimulus would give a 

 perceptibly colored after-image."'' As a matter of fact, it did not. 



=°" Physiol. Optik," 1867, 370; 1896, 520. Cf. W. Wundt, "Physiol. 

 Psychol.," II., 1902, 146. 



^*This possibility was considered, also, in the peripheral work; so that 

 even for that our bias was not wholly negatwe. 



