CONTENTS 



CHAPTER I 



A HIMALAYAN VALLEY 



PAGE 



Definition of Himalaya — Appearance of the range — District of Ha/^ara — 



General features of Hazara — Its valleys, hills and forests . . . i 



CHAPTER n 



HARVESTING ANTS 



General habits — Appearance of ant — Sexual forms — Collection of seeds — 

 Effect of heat, cold, shade, rain, darkness — Cessation of toil — Division 

 of labour ............ ii 



CHAPTER HI 



SENSES AND INSTINCTS OF HARVESTING ANTS 



Sense of smell — Sense of direction — Communication — Play and sport — 

 Peacefulness — Mode of defence — Emotions — Economy — Migration — 

 Pliability of instinct — Aberration of instinct — Folly of ants . . 24 



CHAPTER IV 



CARNIVOROUS ANTS 



Myrmecocysfus setipes — General habits — Division of labour — Food — Sense 

 of smell — Attitude of abdomen — Absence of sympathy — Mode of 

 founding new colony — Intelligence — Folly • 44 



CHAPTER V 



COMMUNICATING AND OTHER ANTS 



Phidole indica — Mode of attack — Power of communication — Experiments 

 on faculty of communication — Sense of smell — Every individual in 

 nest differs — Division of labour — Attitude of Cremasto^aster — Migra- 

 tions of Acanthokpis — Sexual forms of Camponotus .... 60 



CHAPTER VI 



GEOMETRICAL SPIDERS 



Home of spider — Species under discussion — Constitution of colonies — 

 Construction of snare — Emission and structure of the first line — 

 Mechanism in construction of radii — Mechanism in hub — Mechanism 

 in temporary spiral — Mechanism in viscid spiral ..... 82 



ix 



