xxiv CONTENTS. 



LETTER XVI. ^^^* 



Sot-iETiEs OF Insects. 



1. Imperfect societies - - - . . 290 303 



Associations for company - - - _ - 291 



of males - - _ . _ 292 



for emigrating - - - . . 293 



of Caterpillars ----- 293 



Aphides - - _ _ . 294 



Lady-birds - - ■ _ . 295 



Turnip Saw-flies - - - - 295 



Dragon-flies - - - . 295 



Frog-hoppers - - . . ogg 



Beetles - . . . . 296 



Butterflies - - . . . 296 



Field Bugs - - - _ _ 297 



Locusts - - - _ _ 298 



for mutual assistance - - _ . 300 



Ateuchus pilularius - - - - 300 



Caterpillars - - - . - 301 



LETTER XVIL 

 Societies of Insects — continued - - - . S04 347 



2. Perfect societies ( White Ants and Ants) - _ . so4 — 347 



fVkite Ants. 



Individuals composing the society - - - . so7 



Establishment of colonies - -' _ - _ 30S 



Building and repairing habitations , - _ . 310 



Collecting food ---_.. 310 



Defence of habitations - - - - -311 



Termes lucifugus - - - . - -312 



Ants, 



Storing up food ---._- 313 



(Gould's "English Ants") .... 315 



Individuals composing the society - - - - 316 



Formation of new societies — Winged Ants - - - 317 



Language - - - - - - -321 



Affections and aversions - - - . . 324 



Formic acid ---._. 325 



Wars - - - - - . . 326 



Slave-making --.... 328 



Milch Cattle — Aphides, &c. ... -335 



Emigrations . . ' - - - - 338 



Working all night --.-.. 342 

 Roads and track-ways ..... 343 



Strength and perseverance . - - » . 344 



Bridge-making ------ 345 



Repose and sleep .--.-- 345 

 Sports and games --..-• 346 



