288 



FROM FISH TO PHILOSOPHER 



Huot, A., 106 

 Huxley, T. H., 179-80 

 Hypophysis, 257 



Ichthyosaurs, 126 



marine, 173 

 Iguana, marine, 173 

 Insects, 148 



Pennsylvanian, 88 

 Instincts, 204 

 Intelligence, animal, 279 

 Internal environment, 1 f ., 

 184, 228-29 



and evolution, 32 



and kidney, 32, 40 



in man, 142-43 

 Interstitial fluid, 1, 142 

 Inulin, 49, 108 

 Inveriiebrates, Cambrian, 22 



armor, 23 



fresh water, 241 



osmotic regulation, 242 

 Irving, L., 164 



James, William, and Natural 

 History of consciousness, 

 212 



Jaws, evolution, 31-32, 55 



Jurassic, climate, 127 

 reptiles, 128 



Kangaroo, 133 



Kangaroo rats (Dipodomys 



merriami), 156-60 

 Kidney, 31 



amphibian, 95 



and reproductive organs, 



37 f. 

 bibliography, 239 f. 

 comparative anatomy, 265, 



272 



concentrating power, 139 f . 

 embryonic development, 



34, 38 

 evolution, 34, 39, Figure 5 

 fish, anatomy, 263 

 function, 2f., 264 

 human, 38, 141 f. 

 mammalian, 140, 272 

 reptilian, 124 f. 

 Killifish (Fundulus), 113 



Lake Victoria, 72 



Lamprey (Petromyzon), 27, 



39, 53, 247 

 Laramide disturbance, 8, 129 

 and mammalian evolution, 

 136 

 Latimeria, 90-92 

 Laurentian revolution, 21 

 Leadville, 86 

 Learning in lower animals, 



193 f. 

 in man, 194 

 Lepidosiren, 72, 252 

 Lepidosteus, see Gar pike 

 Leucotomy, 220 

 Life, origin of, 21 

 Limulus, SEE Horseshoe crab 

 Linnaeus, 18 

 Lizards, marine, 172 

 Loop of Henle, 140, 143, 144, 



273 



Lophius, SEE Goosefish 



Lounsbury, T. R., 196 



Ludwig, Carl, 46-47 



Limgfishes, 72 

 bibliography, 251 

 estivating, fossils, 84 

 evolution, Figure 7 

 metabolism, 77 

 recent, estivation, 72, 252 



