324 



INDEX 



Energy, dissipation, 6i 



forms, 62 



free, 61 



input and output, 98 



laws of, 64 



modes of, 60 



potential, 63 



radiant, 59 



solar, 62 



sources of, 77 



transformations, 62, 68, 94 



unavailable, 61 

 Engine, animal, 95 

 Entropy, 65 

 Enzymes, 81, 86 

 Epidermis, 49 

 Epigenesis, 207 

 Episodes, paleontological, 317 

 Evolution, 269, 276 



of annelids, 314 



of Arthropods, 315 



of Brachiopods, 314 



of Chordates, 315 



of Coelenterates, 313 



of Echinoderms, 315 



of Man, 319 



of Molluscs, 313 



of Polyzoa, 314 



of Protozoa, 313 



of Spermatophytes, 313 



of Sponges, 313 



of Pteridophytes, 312 

 Evolution, chemical, 273 



cosmic, 271 



and emergence, 277 



and entropy, 275 



hypotheses of, 279 



and novelty, 278 



and probability, 270 



and progress, 279 



tendencies of, 274 

 Evolutionary career, 269 



features of, 309 



future of, 318 

 Excretion, 87 

 Exoskeleton, 39 

 Experience, 149, 151 

 Eye, development of, 196 



Factors, mendelian, 231 

 Families, 222 

 Fats, 24 

 Fertility, 226 

 Fertilization, 181, 188 

 Fishes, 39 

 Flight, 70 

 Fluctuations, 238, 245 



and acquirements, 246 



and environment, 250 



random, 246 

 Fluxes, 9 

 Food, absorption of, 83 



animal and plant, 78 



energies of, 98 



intake of, 78 



reserves, 85 



stuffs, 77, 83 



transformations of, 80, 83 

 Force, fields of, 57 

 Formative layers, 194 

 Fossilization, 297 

 Fossils, 18 

 Freewill, 15 

 Frequency curves, 244 

 Functionality, 126 

 Functions, organic, 55 



changes of, 89 



co-ordinations of, 90 



integrations of, 90 



regulations of, 90 



Galvanotaxis, 142 

 Gametes, 179, 181, 234, 

 Ganglia, 47, no 

 Ganglionic centres, 145 

 Gastrula, 284 

 Gastrulation, 193 

 Genera, 222 

 Genes, 210, 235 

 Genetics, 237 

 Geotropism, 141 

 Germ, 240 

 Germ-cells, i77> 231 

 Germ-layers, 35, 194, 284 

 Germ-plasm, 207, 209 

 Glands, 46 

 ductless, 89 



