220 DARWINISM chap. 



It is interesting to note that these markings for recognition 

 are very slightly developed in the antelopes of the woods and 

 marshes. Thus, the grys-bok is nearly uniform in colour, except 

 the long black-tipped ears ; and it frequents the wooded moun- 

 tains. The duyker-bok and the rhoode-bok are wary bush- 

 haunters, and have no marks but the small white patch 

 behind. The Avood-haunting bosch-bok goes in pairs, and has 

 hardly any distinctive marks on its dusky chestnut coat, but 

 the male alone is horned. The large and handsome koodoo 

 frequents brushwood, and its vertical white stripes are no 

 doubt protective, Avhile its magnificent spiral horns afford easy 

 recognition. The eland, which is an inhabitant of the open 

 country, is uniformly coloured, being sufficiently recognisable 

 by its large size and distinctive form ; but the Derbyan eland 

 is a forest animal, and has a protectively striped coat. In like 

 manner, the fine Speke's antelope, which lives entirely in the 

 swamps and among reeds, has pale vertical stripes on the 

 sides (protective), ^Yith. white markings on face and breast for 

 recognition. An insj^ection of the figures of antelopes and 

 other animals in Wood's Natural History, or in other illustrated 

 works, will give a better idea of the peculiarities of recognition 

 markings than any amount of description. 



Other examples of such coloration are to be seen in the 

 dusky tints of the musk- sheep and the reindeer, to whom 

 recognition at a distance on the snowy plains is of more 

 importance than concealment from their few enemies. The 

 conspicuous stripes and bands of the zebra and the quagga are 

 probably due to the same cause, as may be the singular crests 

 and face-marks of several of the monkeys and lemurs.^ 



^ It may Le thonglit that such extremely conspicuous markings as those of 

 the zebra wouhl be a great clanger in a country abounding Axith lions, leopards, 

 and other beasts of prey ; but it is not so. ZeV)ras usually go in bauds, and 

 are so swift and wary that they are in little danger during the day. It is in 

 the evening, or on moonlight nights, when they go to drink, that they are chiefly 

 exposed to attack ; and Mr. Francis Galton, who has studied these animals in their 

 native haunts, assiires me, that in twilight they are not at all conspicuous, 

 the stripes of white and black so merging together into a gray tint that it is 

 very difficult to see them at a little distance. We have here an admirable 

 illustration of how a glaringly conspicuous style of marking for recognition may 

 be so arranged as to l>ecome also protective at the time when protection is 

 most needed ; and we may also learn how impossible it is for us to decide 

 on the inutility of any kind of coloration without a careful study of the 

 habits of the species in its native country. 



