34 On the Vision of Colours. 
the least shewy imaginable: I should call them dark 
drabs. 
ORANGE & YELLOW, 
( By day-light and candle-light.) 
I do not find that I differ materially from other 
persons in regard to these colours. I have some- 
times seen persons hesitate whether a thing was white 
or yellow by candle-light, when to me there was no 
doubt at all. 
GREEN. | 
(By day-light.) 
I take my standard idea from grass. This ap- 
apears to’ me very little different from red. The 
face of alaurel-leaf ( Prunus Lauro-cerasus ) isa good 
match to a stick of red sealing-wax; and the back 
of the leaf answers to the lighter red of wafers. 
Hence it will be immediately concluded, that I see 
either red or green, or both, different from. other 
people. The fact is, I believe that they both ap- 
pear different to me from what they do to others. 
Green and orange have much affinity also. Apple 
green is the most pleasing kind to me; and any 
other that has a tinge of yellow appears to advan- 
tage. I can distinguish the different vegetable 
greens one from another as well as most people; 
and those which are nearly alike or very unlike to 
others are so to me. A decoction of bohea tee. 
a solution of liver of sulphur, ale, &c. &c. which’ 
