114 INDEX 



Consciousness, 42 Eichornia, 101 



Constructive metabolism, Electric current, 53 



53, 67, 72 Electrical forces, 84ff. 

 Contractile vacuoles, 33 Emulsion, 65 

 Contraction, 30, 33 Energy, 35, 36, 57 

 Contact, 38 Enzymes, 57, 59, 60, 61, 

 Control of life, 21, 67flF., 62, 79 



SSfiF. Evaporation, 47 



Copper, 17, 62 Excreta, 55 



Copper sulphate, 75 Eye, 106, 107 

 Corpus luteum, 95 



Cretin, 91 Fatigue, 36 



Crushing, 58 Fats, 46, 50, 72 



Current of injury, 85 Feathers, 58 



Fertilizers, 51 



Davies, 78 Filterable viruses, 5 



Death 58, 59, 67, 80, 82, 83 Fish, 96 



Deelman, 104 Formaldehyde, 48 



Detlefsen, 108 Formalin, 48 



Destructive metabolism. Food, 56 



54, 67, 69, 70, 72 Fowls, 106 

 Development, 27, 28, 68, Frost, 58 



82 Fruit fly, 109 



Development, reversal of. Fungi, 75, 99 



68 



Differentiation, 9, 11, 12, Gamete, 26 



15 Garner and Allard, 101 



Diffusion, 55 Gelatin, 17, 65 



Digestion, 54 Germ cells, 105 



Drosophila, 109 Gills, 62 



Dyes, 79 Gravitation, 30, 37, 39, 



Dynamic equilibrium, 57 77 



Griffith, 108 



Egg, 26, 27 Growth, 8ff., 29, 67, 99 



