CONTENTS. 



V 



Page 



Hive Bee — continued. 



Fecundation of the Queen - - - 1 30 



Oviposition by the Queen - - -132 



Swarming - - - - - 133 



LETTER XX. 



Perfect Societies of Insects — concluded - 140 — 176 

 Hive Bee - 140—176 



Drones - 140 



Workers - - - - - 143 



collecting nectar - - - - 144 



pollen - 147 



propolis - - - 151 



Distance of excursions - - - - 1 52 



Scouts - - - - - 153 



Population of a hive - - - - 154 



Transportation of hives - - - - 155 



Ventilation - - - - -157 



Cleanliness - - - - - 162 



Language - - - - - 163 



Anger - - - - - 1 64 



Wars - - - - - 166 



Enemies - - - - - 1 69 



Accidents - - - - - 171 



Temperature of the hive - - - - 172 



Instincts not mere sensations - - - 174 



LETTER XXI. 



Means by which Insects defend themselves - 177 — 218 



1. Passive. 



By imitating various substances, objects, and colours - 177 



their brilliant colours - - - 182 



frightful aspect, horns, &c. - - - 183 



spines, hairs, &c. - - - - 183 



hardness and toughness - - - 185 



involuntary offensive secretions - - 185 



power of vitality - - - - 186 



extraordinary multiplication - - - 188 



2. Active. 



By rolling themselves into a ball - - - 189 



simulating death - - - - 191 



assuming various attitudes - - - 192 



motions to alarm or escape their enemies - - 194 

 noises ----- 195 



disgusting and powerful scents - - 196 



scent-organs - - - - 199 



