viii Contents. 



CHAPTER X. 



PAGE 



Mosquitoes and Parasite Problems , „ . . ^^^ 



CHAPTER XI. 

 Humble-Bees and other Matters . . - • 15^ 



CHAPTER XTI. 

 A Noble Wasp ........ 162 



CHAPTER XIII. 



JS^ature's Night-lights . . . . , . .108 



CHAPTER XIV. 

 Facts and Thoughts about Spiders .... 178 



CHAPTER XV. 

 The Death-feigning Instinct - . . « . 200 



CHAPTER XVI. 



HuMMING-BlRDS ........ 205 



CHAPTER XVII. 

 The Crested Screamer ....... 221 



CHAPTER XVIII. 

 The Woodheweu Family ...... 235 



CHAPTER XIX. 

 Music and Dancing in Nature 261 



CHAPTER XX. 

 Biography of the Vizcacha ...... 289 



CHAPTER XXI. 

 The Dying Huanaco 314 



