17 
tern it can be referred. If, on comparing 
it with emerald green, it appears to the 
eye to be mixed with another colour, we 
must, on comparison, endeavour to dis- 
cover what this colour is : if it prove to 
be greyish white, we immediately refer 
it to apple green ; if, in place of greyish 
white, it is intermixed with lemon yel- 
low, we must consider it grass green ; 
but if it contains neither greyish white 
nor lemon yellow, but a considerable por- 
tion of black, it forms blackish green. 
Thus, by mere ocular inspection, any per- 
son accustomed to discriminate colours 
correctly, can ascertain and analyse the 
different varieties that occur in the Ani- 
■ 
, 
I 
