1898-99. | A Correct Colour Code. 43 
The full title of this paper indicates a desire upon my part 
to endeavour to obtain an internationally accepted Colour Code 
with combinations for zoo-geographical purposes, and for facil- 
itating references to the shelves of a library by an eye-index. 
Before advocating my own, I would wish to glance at other 
suggestions which have been made for assisting zoologists in 
such matters, and which have already been referred to and 
illustrated by Beddard in his ‘Zoo-geography’ (p. 118).’ 
All previous Colour Codes with which I am acquainted 
—excepting one, of which I speak later—have been used 
for descriptive purposes by zoologists,—i.e., for purposes of 
describing species. Thus Werner’s “ Nomenclature of Colours,” 
excellent as it was, involved many and various tints, washes, 
or shades, useful for the purposes intended, but quite too 
confusing and subtle for those which I have in view. In 
a similar way, Ridgeway’s “Nomenclature of Colours” was 
similarly intended for descriptive purposes in zoology. Sac- 
cardo’s ‘ Chromotaxia seu Nomenclator Colorum’ is also useful 
principally for zoological purposes, apart from zoo-geographical 
ones. But as Saccardo’s true colours are descriptive and 
convenient, I purpose using them as descriptive of my own— 
his being in Latin and mine in English. 
For zoo-geographical delineation and for eye-index purpose, 
I find it only desirable to bring into use the three primary 
colours, the three secondary colours, and two tertiary colours, 
besides white, grey, and black. Thus :— 
SACCARDO. CorREcT CoDE CoLourRs. 
1. Albus. 1. White. 
2. Griseus. 2. Grey. 
3. Niger. 3. Black. 
4, Ruber. 4. Red. 
5. Flavus. 5. Yellow. 
6. Cyaneus. 6. Blue. 
7. Viridis. 7. Green. 
8. Aurantiacus. 8. Orange. 
9. Ferrugineus. 9. Russet. 
10. Fulvus. 10. Brown. 
11. Purpureus ov Atro-purpureus. 11. Purple. 
Saccardo’s “Tabelle Colorum” proves useful in many 
directions; and the whole paper is a most excellent work 
of reference. 
1 Zoo-geography (Cambridge Nat. Science Manuals), 1895. 
