xii CONTENTS 



CHAPTER IV 



AT DAGGERS DRAWN 



The Birth of Weapons — All Flesh is Grass — Utility and Ornament 

 — The Fever of Love — The ".Challenge" of the Deer — What 

 it means — More about " Hormones " — " Hummel " Stags — 

 The Age of Deer — The " Courtship " of the Moose — Types of 

 Antlers — Antlered Females — Fighting Topi — The Lance of the 

 Oryx in the Lion's Flanks — Happiness and Hartebeestes — 

 Odoriferous Suitors — The Bloody Sweat of the Hippopotamus 

 — The Elephant in Love — Concerning Tusks — Polygamy. 49 



CHAPTER V 



THB LION ANB HIS KIN 



/ A Surprising Relationship — The Lion's Mane — The Sabre-toothed 

 ? Tiger — Some Theories about Origins — Sea-lions in Love — 



/ Some Strange Ornaments — Whales and Weapons . . -jj 



CHAPTER VI 



COURTSHIP AMONG BIRDS 



Generalities — Darwin v. Wallace — The Peacock in his Pride — The 

 "Display" of the Peacock Pheasant — The Splendour of the 

 Argus Pheasant and the Marvel of its Eyes — The Frill of the 

 Amherst Pheasant — Birds of Paradise in the Toils of Love 

 — Inflated Suitors — Ruffs and Reeves — Fearsome Weapons 

 and their Uses — Birds which dance — Musical Birds — The 

 \ Bird's Voice-box — The " Lek " of the Capercaillie — Instru- 

 * ments of Percussion — The Curious Performance of the Wood- 

 pecker ......... 92 



CHAPTER VII 



THB SBXl'AL SELBCTION THEORY AS APPLIED TO BIRDS 



Where the R&le of the Sexes is reversed — Polygamy and how it is 

 brought about — Coloration and Courtship — Instinctive Actions 

 — The Importance of Landed Possessions — The Meaning of 

 " Display " — The Springs of " Behaviour " — A New Light on 

 the Wild-duck — The " Display " of the Great-crested Grebe — 

 Some Neglected Factors . . . . . . 1 34 



