vi 
CONTENTS 
CHAPTER IV 
INTELLIGENT BEHAVIOUR 
Tue Nature or InreLvicgent BEnAVIOUR . 
InvevLicenr Benavrour IN Insects 
Some Resutts or ExpErimenT 
Tut Evorution or InreL.ticenr Brvaviour 
Tue InrLuence or InreLLicence on Insrinct 
CHAPTER V 
SOCIAL BEITAVIOUR 
ImMrra tion ‘ 
INTERCOMMUNICATION co ntia ja. 
SoctaL Communities or Bers and ANTS 
ANIMAL TRADITION . a 
Tue Evonurion or SoctAL BrHaviour . 
CHAPTER VI 
THE FEELINGS AND EMOTIONS 
Impuusz, Interest, anp Emorion 
Puay . 
CourtsHip bs OG fas aly Gael Ca, 2 
ANIMAL “ AdsruEtics” anp “ Eruics”’ . 
Tue Evouution or Freeing snp Exorion 
CHAPTER VIL 
THE EVOLUTION OF ANIMAL BEHAVIOUR 
Tue PuysioLocicaL ASPECT 
Tue BrotogicaL Aspecr 
THe PsycHoLoGicaL ASPECT 
Conrinuity In EvoLurion 
InpEx 
PAGE 
17 
123 
134 
155 
168 
173 
193 
205 
220 
225 
235 
248 
258 
270 
282 
295 
305 
315 
324 
338 
