13 
difficult to give colours for every object 
that appears in nature ; the tints are so 
various, and the shades so gradual, they 
would extend to many thousands : it 
would be impossible to give such a num- 
ber, in any work on colours, without 
great expence ; but those who study the 
colours given, will, by following Wer- 
ner's plan, improve their general know- 
ledge of colours ; and the eye, by prac- 
tice, will become so correct, that by ex- 
amining the component parts of the co- 
lour of any object, though differing in 
shade or tint from any of the colours 
given in this series, they will see that it 
partakes of, or passes into, some one of 
i 
