CONTENTS 



CHAPTER I 



NOTES ON THE QUESTIONS OF PROTECTIVE COLORATION, 

 RECOGNITION MARKS, AND THE INFLUENCE OF ENVIRON- 

 MENT ON LIVING ORGANISMS 



Harmony of colour in nature Theory of protective coloration Sexual 

 selection Conspicuous colours not harmful The influence of environ- 

 ment The leucoryx The Barbary sheep The Sardinian moufflon 

 African butterflies Coloration of the musk ox and caribou Arctic hares 

 and foxes Coloration of mammals in the Yukon Territory The 

 chamois in winter Examples of conspicuous coloration in African 

 mammals Colour not always protective Carnivorous animals usually 

 hunt by scent Wild dogs and wolves Wild dog and sable antelope 

 Sense of smell in herbivorous animals Sight of antelopes Experience 

 with waterbuck Dull sight of caribou Demeanour of wild animals 

 when alarmed Small antelopes Lions Large antelopes Difficulty 

 of seeing wild animals sometimes exaggerated- Powers of sight of 

 Bushmen Colour not protective against animals which hunt by night 

 and by scent Animals in motion easy to see Restlessness of wild 

 animals Lions attacking bullocks Zebras the principal prey of lions 

 since the disappearance of buffaloes Appearance of zebras Undoubtedly 

 conspicuous animals in open country Zebras by moonlight Strong 

 smell of zebras Conspicuous antelopes in East Africa Effect of 

 the juxtaposition of black and white Bold coloration of the sable 

 antelope ......... Pages 1-23 



CHAPTER II 



FURTHER NOTES ON THE QUESTIONS OF PROTECTIVE COLORA- 

 TION, RECOGNITION MARKS, AND THE INFLUENCE OF 

 ENVIRONMENT ON LIVING ORGANISMS 



Occasional resemblance of African mammals to natural objects Hartebeests 

 Elephants Giraffes Coloration of the Somali giraffe Giraffes not 

 in need of a protective coloration Koodoos and sable antelopes Acute 

 sense of hearing in the moose Possible explanation of large size of 

 ears in the African tragelaphine antelopes Coloration of bushbucks, 



