PHYSIOLOGY OF THE INVERTEBRATA. yjz 



lent of mincl, and which is capable of developing with every 

 generation — i.e., according to the Darwinian low. 



But it is not our intention to go fully into the subject of 

 animal intelligence as displayed in various groups of the 

 Invcrtchi'at(( ; such information the reader will obtain by con- 

 sulting special treatises devoted to this fascinating subject.* 



* Mov^SiVLS Animal Life and Intelligence; Romanes' J H/maZ IntelUfjence ; 

 and Lubbock On the Senses, Instincts, and Intelligence of Animals, with special 

 reference to Insects. 



