52 THE BEAUTIES OF NATURE CHAP, 
white like snow, especially in winter; and 
pelagic animals are blue. | 
Let us take certain special cases. The 
Lion, like other desert animals, is sand-col- 
oured ; the Tiger which lives in the Jungle 
has vertical stripes, making him difficult to 
see among the upright grass; Leopards and 
the tree-cats are spotted, like rays of. light 
seen through leaves. 
An interesting case is that of the animals 
living in the Sargasso or gulf-weed of the 
Atlantic. These creatures — Fish, Crustacea, 
and Mollusks alike—are characterised by a 
peculiar colouring, not continuously olive like 
the Seaweed itself, but blotched with rounded 
more or less irregular patches of bright, opake 
white, so as closely to resemble fronds cov- 
ered with patches of Flustra or Barnacles. 
Take the case of caterpillars, which are 
especially defenceless, and which as a rule 
feed on leaves. The smallest and youngest 
are green, like the leaves on which they live. 
When they become larger, they are char- 
acterised by longitudinal lines, which break 
up the surface and thus render them less 
