39 
and yellows ought to be pure and 
free from all intermixture with any- 
other colour ; gamboge, as the purest 
yellow colour, is adopted instead of 
lemon yellow, as the characteristic 
colour of the yellows. 
No. 66. Gamboge Yellow, is the characteristic 
colour. 
67. King's Yellow, is gamboge yellow, with 
a small portion of saffron yellow. 
68. Saffron Yellow, is gamboge yellow, with 
gallstone yellow, about equal parts of 
each. 
* 
69. Gallstone Yellow, is gamboge yellow, 
with a small quantity of Dutch orange, 
and a minute proportion of honey 
yellow. 
