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 VIZCACHA ...... 289
CHAPTER XXI. THE DYING HUANACO ....... 314