CONTENTS 



CHAPTER VII 



FURTHER OBSERVATIONS ON THE GEOMETRICAL SNARE 



PAGE 



Ultimate fate of temporary spiral Reversal of spiral Reason of reversal 

 of spiral Example of plasticity of instinct Spider's power to estimate 

 tension Delicacy of sense of touch Industry of Araneus Mode of 

 emission of filament Economy of spider and destruction of snare 

 Perfection and imperfection in snare 108 



CHAPTER VIII 



THE INSTINCT OF SPIDERS 



Spiders and weather Force of instinct Repair of web Experiments to 

 indicate the unswerving force of instinct Slavery to instinct Trans- 

 ference to other snares Spider not entangled in its own snare Mode 

 of escape Protective resemblance Special senses of spiders . .124 



CHAPTER IX 



SHEET-BUILDING SPIDERS 



Habits of spider and character of snare Refusal to spin in stormy weather 

 Mode of capturing prey Injection of poison Sense of touch 

 Function of pedipalps Force of instinct Shamming death in spiders 

 and insects Physical properties of web Pertinacity of Artema . 150 



CHAPTER X 



OBSERVATIONS ON INSECT LIFE. 



Mountain dust Inhabitants of pools Carnivorous flies Water-boatmen 

 Struggle for life Mentality of fishes Habits of Vespa orientalis 

 Nest of Polities Depredations of Vespa magnified Mimicry in 

 humble-bees Humble-bees and flowers Habits of leaf-cutting bees 

 Instinct of mud- wasp Instinct of digger-wasps 164 



CHAPTER XI 



BUTTERFLIES, MOTHS AND CICADAS 



Swallow-tails of Hazara Sexual display Protective coloration in butter- 

 flies Butterflies resembling leaves Protectively-coloured moths 

 Enemies of butterflies and moths Instinctive fear of enemies Rainy 

 season in Hazara Habits and musical organs of Cicada . . .196 



CHAPTER XII 



GLOW-WORMS, TERMITES AND SHELLS 



Habits and luminosity of glow-worms Their contests with snails Flight 

 and destruction of termites Instincts associated with their distribution 

 and preservation Shedding of wings Habits of ant-lions Notes on 

 the dispersal of shells . . . . . . . . . .218 



CHAPTER XIII 



OBSERVATIONS ON MAMMALS 



Comparative scarcity of mammals Observations on flying squirrel Habits 

 and instincts of Himalayan monkeys Emotional expression in the 

 leopard Contentment Fear Anger Distress Eagerness Atten- 

 tion Affection 239 



