INDEX 



Absorption, 61, 62 



Acceleration, 35 



Acquirements of behaviour, 151 



Acting, functional, 180; indetermin- 

 ism of, 180; unconscious, 178 



Action, creative, 181; difficult, 178; 

 forms of , 178 ; habitual, 13, 180; and 

 psychical processes, 178; studied 

 objectively, 180 



Activation of enzymes, 58 



Activity, individualistic, 8; spon- 

 taneous, 9, 182 



Adaptations, 149; concealing, 150; 

 functional, 150; and intelligence, 

 151 



Aggression, organs of, 3, 11 



Air, fixed, 157; sacs in birds, 2; 

 vesicles in lungs, diagram, 67 



Algae, 9 



Alimentary canal, 163 



Altruism, 142 



Amino-acids, 59, 62 



Ammonia in nature, 79 



Analysis of activities, 12, 193; of 

 sensation, 174 



Anatomy, 20; comparative, 2; and 

 function, 125 



Animal automata, 13, 153, 178, 192 

 behaviour, 192; combustion, 56 

 definition of, 4; and energy, 156 

 feral, 142; saprozoic, 84; sedentary, 

 9; spirits, 155: structure, 1; and 

 vegetable, 85; warm-blooded, 1 



Animate engine, 81; mechanism, 69 



Anthropoids, brain of, 127 



Antiseptics, 78 



Appendages and locomotion, 12 



Aqueduct of Sylvius, 97 



Arteries, muscles of, 22 



Articulations in forelimb, 18; in 

 skeleton, 14 



Asphyxiation, 6 



Assimilation, 57, 63 



Association paths, diagram, 103 



Atmosphere, composition of, 82 



Atomic weight, 36 



Atoms, 33, 36; indivisibility of, 36; 

 rearrangements of, 167 



Auditory organ, 108; ossicles, 12; 

 sensation, 114; sense and equili- 

 brium, 114; tracts in brain, 114 



Autolysis of flesh, 78 



Automata, artificial, 153; decerebrate, 



141; organic, 13, 153, 178, 192 

 Available energy, 38 ; decrease of, 197; 



in universe, 209; waste of, 197 

 Axons of nerves, diagram, 26 



Bacteria, action of, 219; fermentative, 

 78; nitrifying, 79; oceanic, 80; 

 pathogenic, 77; putrefactive, 78 

 Barnacles, taxis in, 135 

 Becoming, principle of, 49 

 Behaviour, animal, 9, 12, 149; grading 

 of, 187; measurement of, 171; pre- 

 diction of, 172 

 Bell and nervous impulses, 164 

 Bergson and duration, 206; and in- 

 telligence, 214; and matter, 185; 

 and spirit, 185 

 Biology, the modem impasse, 193; 



utilitarian, 160 

 Black and combustion, 151 

 Blood, arterial and venous, 67; circu- 

 lation of, 63; corpuscles, diagrams, 

 68; gases of, 68; plasma of, 69; 

 venous, 70 

 Blood flow, regulation of, 88 

 Blood, vascular svstem, diagram, 63, 



64 

 Bloodvessels, 61 ; calibre of, 22 

 Bodily action, scheme of, 130 

 Boltzmann and entropy, 202 

 Bones, fixed and movable, 22 

 Brain, 94; alternative paths in, 183; 

 development diagrams, 95; diagrams 

 of, 98, 100; earthworm, 92; evolu- 

 tionary stages in, 105; fish, 96; 

 general scheme of, 89; lower, 103, 

 139, 146; of mammal, 96; vesicles 

 of, 94; working of, 148 

 Burrowing animals, 11 



Calorie, 37; definition of, 40, 44 

 Calorific values, 158 

 Calorimeter, 40, 44 

 Cancer, 7 



Capacity factors of energy, 50 

 Capacity for doing work, 37, 38, 42 

 Capillaries, 61 



Carbohydrates, 58, 60; decomposition 

 of, 79 

 241 16 



