286 



FROM FISH TO PHILOSOPHER 



Devonian, 27, 59~62, 71-73, 



85-86 

 De Vries, Hugo, 13 

 Dinosaurs, 126 f., 128 

 Diplodocus, 127 

 Dipnoi, 72 

 Dipodomys merriami, see 



Kangaroo rats 

 Dipterus, Figure 7 

 Disturbances, geologic, 8 

 Diuresis, 45 



laboratory,' in marine 



fishes, 114 

 Divi, Shakuntala, 211, 279 

 Dogfish, rectal gland, 65 

 Donkey, 155 

 Dryopithecus, 178-83 

 Dualism, 198 



Duck, eider (Somateria), 169 

 Duckbill ( Platypus ) , 121, 



133 f. 



Earth, 1 



age, 5 



bibhography, 227-28 



cross section. Figure 1 



fluidity, 6, 7 



origin, 3 



structure, 3 

 Echidna (spiny anteater), 



121, 132 

 Edwards, J. G., 47 

 Eel, common (AnguiUa), 



105, 113 

 Egg, elasmobranch, 66 

 Elasmobranchii, 248 

 Elasmobranchs, bibliogra- 

 phy, 246-47 

 characteristics, 6o-6i, 248 

 evolution, Figure 6 

 fresh-water, 67 f., 253 f. 



rectal gland, 249 

 Environment, internal, 1 f ., 



229 

 Eocene, 137 f. 

 Eogyrinus, 93 f. 

 Equisetum, 88 

 Erosion, yi. 

 Eryops, 93 



Estivation of lungfish, 72-80 

 Eurypterids, 23 f ., 28 f ., 58 



exoskeleton, 238-39 

 Eurypterus remipes, 2S 

 Eusarcus scorpionis, 28 

 Eusthenopteron, 90 

 Eutheria, 134 

 Evolution, 11-24 



bibhography, 229-30 



direction in, 17 

 Extracellular fluid, 2, 142 



Fallopian tubes, 37 

 Fange, R., 172-73 

 Fertilization, internal, 66 

 Filtration rate, measurement 



of, 45-49 

 Fins, evolution of, 31 

 Fishes, Bony, 61, 71-72, 

 103 f. 



acidification of urine, 267 



bibhography, 260-63 



deep sea, m 



Devonian, 55, 89 



filtration rate, 105 



marine, 104, 112, 264-68 



early, evolution. Figure 6 



ganoid, 112 

 Flowering plants, 88 

 Forster, R. P., in, 114, 254 

 Fredericq, L6on, 185 

 Fresh water, and protoverte- 

 brate, 28 f ., 233-37 



