2l6 



Index 



Memory, its physical basic sub- 

 stance, 26 

 of insects, 89 

 in relation to cerebral centres, 



!33. J 59 



Metabolism, its meaning, 17 

 Mid-brain of lower animals, 82, 



98, 103, 106 

 Molecules and atoms, effect of 



change in their elements, 10 

 Mumford, E. R., on the dawn of 



character, 108, 190 

 Neopallium, defective in idiots, 



146 

 effect of degeneration of, 162, 



167 



imperfect in infants, 186 

 a reflex analyser, 176 

 its origin and development, 105, 



109, 119, 130 

 functions of basic matter, 104, 



141 



rudimentary in lower verte- 

 brates, 106 



development of in reptiles, 120 

 association areas of, 150, 157 

 large size of in human beings, 



141, 148 

 developed through exercise of 



sensorv organs, 149 

 and memory, 117 

 Nerve cells in hydroids, 35, 36 



description of, 96 

 Nervous system of medusoids, 40, 

 48 ; of worms, 68 ; of starfish 

 and crayfish, 58, 77 ; of insects, 

 8 1 ; of fishes and lower animals, 

 98, 102 ; of primates, 148 

 Pithecanthropus erectus, 142 

 Potential energy, 14 

 Prof. Pawlow on higher nervous 



functions, 176 



Protoplasm, its inherent proper- 

 ties, 17, 25 



icsponse to stimuli, 20, 26, 28 

 response to environment, 27, 36, 

 37 



Protoplasm, physical basis of 



memory, 26 



a transformer of energy, 14 

 of nerve cells, 51 



possesses mnemic and in- 

 stinctive elements, 52 

 Purposive movements of insects, 



89 



Reflex action in hydroids, 60, 64 

 in insects, 89 



"conditional" of Pawlow, 174 

 Sensory organs in hydroids, 35 ; 

 in medusoids, 40 ; in crus- 

 tacea, 75 ; in insects, 86 ; 

 their relation to cerebral de- 

 velopment, 151 ; training 

 through means of, 155, 184 

 impressions and psycho-instinc- 

 tive processes, 152 

 Shaw Bolton on association pro- 

 cesses, 164 



Skulls of prehistoric men, 142 

 Soddy, F. (Prof.), on energy, 12 

 on development of eyes of 



human beings, 56 

 Spinal cord and nerves, 97 

 Starfish, their structure, 58 

 nervous system, 59 

 instinctive behaviour, 61 

 Stentor casruleus, movements of, 



under stimuli, 27 

 Stimuli in reference to reflex 



action, 20 



Training of young children, 186 

 E. R. Mumford on, 190 

 M. A. Wood on, 190 n. 

 boys of the labouring classes, 



*95 



Volvocinas and their germ cells, 29 

 Washburn, M. F., on the animal 



mind, 80, 116, 121 

 Worms, the development of brain 



from the ectoderm, 68 

 their nervous system, 69 



instinctive behaviour, 71 

 Yerkes (Prof.), his labyrinth 

 method, 79, 115 



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