viii Contents. 



CHAPTER X. 



PAGB 



Mosquitoes .and Parasite Problems . . . • 1*^ 



CHAPTER XI. 

 Humble-Bees and other Matters .... 154 



CHAPTER XII. 

 A Noble Wasp I 62 



CHAPTER XIII. 

 Nature's Night-lights 168 



CHAPTER XIV. 

 Facts and Thoughts about Spiders . . . .178 



CHAPTER XV. 

 The Death-feigning Instinct 200 



CHAPTER XVI. 

 Humming-Birds . 205 



CHAPTER XVII. 

 The Crested Screamer 221 



CHAPTER XVIII. 

 The "Woodhewer Family ...... 235 



CHAPTER XIX. 

 Music and Dancing in Nature 261 



CHAPTER XX. 

 Biography of the Vizoacha ...... 289 



CHAPTER XXI. 

 The Dying Huanaco . 314 



