0. N. Rood on Combination of Light of different tints. 257 
8. Orange and black gave a more neutral tint by binocular 
vision than by rotation. 
9, Orange and white gave the same tint. 
__ 10. Chrome yellow and emerald green (170°) gave the same 
‘Result, viz., a yellowish green. 
il. Chrome yellow when combined with black by rotation 
_ givea more decided yellow than would have been expected from 
_ the stereoscopic union of the two components. 
_ 12. With white the tint was the same in each case. 
43. Emerald green with white gave the same tint in both 
_ Mises; with black the tint was not nearly green enough in the 
binocular union. 
__ if. Ultramarine with white or black gave about the same re- 
- Sultin each case. 
_ _ 1. Purple and yellow (107-7) by rotation gave a decided yel- 
low: the va impression from binocular vision was much 
heutral. 
. Golden yellow and Prussian blue gave about the same tint 
two cases, viz., a nearly pure gray. 
2. Vermilion and greenish blue gave approximately the same 
hat in oth cases, viz., a gray slightly purplish: the tint by bi- 
* Vislon was a little more neutral. ; 
j nbn ensh yellow and purple gave sometimes the same tint 
- Mboth cases, viz., a gray with atinge of green. = 
:. 4 Emerald green and purplish red gave by rotation a good 
Mutral gray, but I could not, by binocular vision, get exactly 
ult, the tint of the resultant being either too red 
Both of the original colors used were very pure 
I give two combinations on which many experiments 
©, viz., first, chrome yellow and ultramarine. By the 
.2*Y, While the true union of the colors gave a flesh tint. 
eae °8 in reali sultants in the two 
‘seg thay Teality take place, yet that the re 
“dency 
