IXDEX 



4^5 



De Vrics, mutation theory of, 402; 



j)ortrait, 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, 



157 

 Ehrenberg, 106, 107; portrait, loS 

 Embryological record, interpretation 



of, 22Q 



Embryology, Von Bacr and the rise 

 of, IQ4-236; experimental, 2^2; 

 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; efifect 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 \'ries, 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 ; views of certain fathers of the 

 church, 408 



Experimental observation, intro- 

 duced by Harvey, 39-53 



Experimental work in biology, 439 



Fa])rica, 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 New 



Haven, ^^^\ in Xew York, ^^^y,; 

 man, 340, 364; Neanderthal skull, 

 365; ape-like man, 3O4 



Fossil remains an index to j)ast his- 

 tory, 329 



Fossils, arrangement in strata, 328; 

 ascribed to the flo<jd, 323; their 

 comparison with living animals, 

 324; from the Fayum district, 341 ; 

 method of collecting, 340; nature 

 of, 322; determination of, bv 

 Cuvier, 325; Da \'inci, 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 WollT, 211; in j)hysiology, 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, 

 ic)8; embryological treatise, 109, 

 200; frontispiece from his genera- 

 tion of aninials (1651), 201; in- 

 tluence of, 52; introduces exper- 



