Contents. 



XI 



CHAPTER VII. 



THE SENSES OF ANIMALS. 



Tbe primary object of sensation 



. . 243 



Organic sensations and the muscular sense 



244 



Touch 



. . 245 



The temperature-sense 



249 



Taste.. 



. . 250 



Smell 



257 



Hearing 



. . 261 



Sense of rotation or acceleration 



269 



Sight 



. . 273 



Restatement of theory of colour-vision 



278 



Variation in the limits of colour-vision 



. . 281 



The four types of " visual " organs 



293 



Problematical senses 



. . 294 



Permanent possibilities of sensation 



298 



CHAPTER VIII. 



MENTAL PROCESSES IN MAN. 



The physiological aspect 



The psychological aspect 



Sensations : their localization, etc. 



Perceptual construction 



Conceptual analysis 



Inferences perceptual and conceptual 



Intelligence and reason 



302 

 304 

 306 

 312 

 321 

 328 

 330 



CHAPTER IX. 



MENTAL PROCESSES IN ANIMALS : THEIR POWERS OF PERCEPTION AND 

 INTELLIGENCE. 



The two factors in phenomena 



The basis in organic evolution 



Perceptual construction in mammalia 



Can animals analyze their constructs? 



The generic difference between the minds of man and brute 



Perceptual construction in other vertebrates 



" Understanding " of words 



Perceptual construction in the invertebrates 



" The psychic life of micro-organisms " 



The inferences of animals 



Intelligent not rational 



Use of words defined 



Language and analysis . . 



. . 331 



336 



. . 338 



347 



. . 350 



350 



. . 354 



356 



. . 360 



361 



. . 365 



372 



. , 374 



