E. B. TITCHENER— ETHNOLOGICAL TESTS OF SENSATION. 219 



with glasses of other colors ; perhaps we did ; the thing that struck 

 me, at any rate, was the difficulty of distinguishing blues in a darkish 

 room. Recent work with Hering's colored glasses shows that a shift 

 of the instrument employed, on a gray snowy day, from the window 

 to the middle of a large gray-painted room produces the following 

 changes in liminal values (three observers; method of Hmits ; conven- 

 tional units) : 



I give no further details, since I attach little importance to the nu- 

 merical values; however carefully the work is done, it is full of 

 errors. I notice only that B is the one color that suffers consistently 

 in the dark, and that it suffers on the average much more than Y 

 and about as much as R. The figures are : 



Increase of Limen in Dark. 



If, now, the tintometer in Torres Straits was set up in a room of 

 " the disused missionary house," and in England in a well-lighted 

 laboratory room — we are not informed as to the English conditions — 

 then we may be pretty sure that the Murray Islanders were at a dis- 

 advantage on the score of blue. That conclusion follows both from 

 Geissler's results and from my own. Such a disadvantage, whether 

 acting alone or combined with a tendency to disregard the supra- 

 liminal flush, might account for the difference in the average limens 

 of Murray men and Englishmen. It may be that the Murray Island 

 limen for Y (slightly higher than the English, despite its somewhat 



