Composition of Broken Colors. 
25 
TABLE SHOWING PERCENTAGES OF NEUTRAL GRAY 
IN THE BROKEN COLOR SCALES. 
Every Plate in each series of broken colors (' to 
contains exactly the same percentage of neutral gray in 
each color, the relative amount increasing progressively 
in the several series, as shown in the followiug table. 
The percentages of white in the tints and of black in the 
shades of the tone scales are in all cases exactly the same 
as in the tone scales of pure colors. 
Series. 
Percentages. 
Color. 
Neutral 
• Gray. 
Pure Colors 
.100 
(') 
68 
32 
(") 
42 
58 
("') 
23 
77 
("") 
10 
90 
4.5 
95.5 
Neutral Gray 
100 
TABLE OF PERCENTAGE OF BLACK AND WHITE IN THE 
different tones of carbon gray. 
Tone Number. 
Percentages. 
Black. 
White. 
1 
100 
2 
98 
2 
3 
94.5 
5.5 
4 
89.5 
10.5 
5 
83 
17 
6 
75 
25 
7 
67.5 
32.5 
8 
58.5 
41.5 
9 
47 
53 
10 
30 
70 
Note .—The percentages given in the preceding tables may not in all cases be pre¬ 
cisely those actually contained in the colors on the Plates, since absolute preci¬ 
sion in reproduction is hardly possible. All that can be claimed is a reasonably 
close approximation to the ideal. 
