16 MOSTLY MAMMALS 
we further learn, from contrast with the bushbucks, that 
when the ground-colour is fawn or rufous the intervals 
between the white stripes must be large, while in the case 
of a black ground such intervals are no greater than the 
width of the stripes. Whether such modifications of the 
pattern according to the shade of the ground-colour produce 
the same effect in forest or brushwood, can be learnt only 
by actual observation, and here again we must look to the 
sportsman. 
As regards the Somali giraffe, those who have had the 
opportunity of seeing Lord Delamere’s photographs can 
scarcely fail to notice that the type of coloration differs 
markedly from that of the common species, while the 
animal itself appears to be found in much more jungly 
country than is the case with the former. In place of 
having a buff ground-colour blotched with large irregular 
chocolate patches, the Somali giraffe is a liver-coloured 
animal marked with a coarse network of fine white lines, 
the type of coloration coming very close to that of some 
of the smaller bushbucks. Clearly this colouring is an 
adaptation for a mode of life not very different from that 
of the bushbucks, whereas the coloration of the ordinary 
giraffe is suited to an animal dwelling in open plains 
dotted here and there with tall scattered trees. The two 
types of coloration are, in fact, precisely analogous to 
those of Grévy’s zebra as compared with Burchell’s zebra, 
the one being a dweller in brushwood and the other in 
open country. The Somali giraffe has not, however, ac- 
quired the broad ears of essentially forest animals like its 
cousin the okapi, and for a very sufficient reason. The 
brushwood amid which this giraffe is commonly found 
does not reach more than half-way up its neck, as is 
clearly shown in the photographs already alluded to, so 
