Composition of Broken Colors. 



25 



TABLE SHOWING PERCENTAGES OF NEUTRAL GRAY 

 IN THE BROKEN COEOR SCAEES. 



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 



(') 

 (") 



Neutral Gray 



100 

 68 

 42 

 23 

 10 

 4.5 





32 



58 

 77 

 90 

 95.5 

 100 





TABLE OF PERCENTAGE OF BLACK AND WHITE IN THE 

 DIFFERENT TONES OF CARBON GRAY. 



Tone Number. 



Percentages. 



Black. 



White. 



1 



2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 

 10 



100 

 98 

 94.5 

 89.5 

 83 

 75 

 67.5 

 58.5 

 47 

 30 





2 



5.5 

 10.5 

 17 



25 



32.5 



41.5 



53 



70 



Note— The percentages given in the preceding tables mav 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. J 



