IXDEX 



465 



De Vries, mutation theory of, 402; 



portrait, 403; summary, 406 

 Dufour, Leon, on insect anatomy, 



100 

 Dujardin, 250, 262; discovers sar- 



code, 250, 266; portrait, 265; 



writings, 264 



Edwards, H. Milne-, 157; portrait, 



*57 



Ehrenberg, 106, 107; portrait, 108 



Embryological record, interpretation 

 of, 229 



Embryology, Von Baer and the rise 

 of, 104-236; experimental, 232; 

 gill-clefts and other rudimentary 

 organs in embryos, 361; theoret- 

 ical, 235 



Epochs in biological history, 20 



Evolution, doctrine of, generalities 

 regarding, 345; controversies re- 

 garding the factors, 346, 369; fac- 

 tors of, 368; effect on embryology, 

 225; on palaeontology, 332; na- 

 ture of the question regarding, 

 348; a historical question, 348; 

 the historical method in, 348; 

 sweep of, 366; one of the greatest 

 acquisitions of human knowledge, 

 366; predictions verified, 367; 

 theories of, 369; Lamarck, 369; 

 Darwin, 386; Weismann, 392; 

 De Vries, 402 ; summary of evo- 

 lution theories, 404; vagueness 

 regarding, 346 



Evolutionary series, 35 1 ; shells, 35 1 ; 

 horses, 354 



Evolutionary thought, rise of, 407- 

 433 ' vi ew s of certain fathers of the 

 church, 408 



Experimental observation, intro- 

 duced by Harvey, 39-53 



Experimental work in biology, 439 



Fabrica, of Vesalius, 30 



Fabricius, Harvey's teacher, 41; 



portrait, 43 



Factors of evolution, 369 

 Fallopius, 36; portrait, 37 

 Flood, fossils ascribed to, 323 

 Fossil life, the science of, 320-341; 

 bones, 322, 325; horses in Amer- 

 ica, 355; collections in Xew 



Haven, 355; in Xew York, 355; 

 man, 340, 364; Neanderthal skull, 

 365; ape-like man, 364 



Fossil remains an index to past his- 

 tory, 329 



Fossils, arrangement in strata, 328; 

 ascribed to the flood, 323; their 

 comparison with living animals, 

 324; from the Fayum district, 341 ; 

 method of collecting, 340; nature 

 of, 322; determination of, by 

 Cuvier, 325; Da Vinci, 322; 

 Steno, 322; strange views regard- 



ing, 320 



Galen, 23, 180; portrait, 25 

 Galton, law of ancestral inheritance, 



318; portrait, 317 

 Geer, De, on insects, 95 

 Gegenbaur, 163; portrait, 164 

 Generation, Wolff's theory of, 210 

 Germ-cells, organization of, 210 

 Germ -layers, 218 



Germ-plasm, continuity of, 393; 

 complexity of, 395 ; the hereditary 

 substance, 311; union of germ- 

 plasms the source of variations, 



396 



Germ-theory of disease, 293 



Germinal continuity, 224, 308; doc- 

 ^ trine of, 224, 311, 393 



Germinal elements, 305 



Germinal selection, 397 



Germinal substance, 310 



Gesner, 112; personality, 113; por- 

 trait, 114; natural history of, 113 



Gill-clefts in embryos, 361 



Goodsir, 174 



Grew, work of, 56 



H 



Haeckel, 431; portrait, 432 

 Haller, fiber-theory, 242; opposition 

 to Wolff, 21 1 ; in physiology, 181; 

 portrait, 182 



Harvey, and experimental observa- 

 tion, 39-53; his argument for the 

 circulation, 51; discovery of the 

 circulation, 47; his great classic, 

 46; education, 40; in embryology, 

 198; embryological treatise, 199, 

 200; frontispiece from his genera- 

 tion of animals (1651), 201; in- 

 fluence of, 52; introduces exper- 



