352 SIR W. DE W. ABNEY : MODIFIED APPARATUS FOR MEASUREMENT OF COLOUR 



or 86 '3. The amount of inherent white in SSN 35 '64 is 68 '5, so that there is 

 38 per cent, more white in emerald-green than there is in SSN (35'64). 

 Emerald-green is therefore represented by 



SSN 35-64. W. Emerald-green. 



62 + 38 = 100. Luminosity 40'5. 



Chrome-yellow was treated in the same manner. 



TABLE VI. Emerald-green Pigment. 



