INDEX 



477 



Volvox, proof of that a difference 

 exists between the somatic- and 

 the germ-cells, 213; as an exam- 

 ple of sexual dimorphism, 355 



Vries, Hugo de, objection to the 

 theory of ancestral germ-plasms, ' 

 12 ; ' intracellular pangenesis ' i 

 compared with Darwin's ' pan- | 

 genesis,' 12; objection to the view 

 that the hereditary substance is 

 contained in the nucleus only, 

 26; on the structure of proto- 

 plasm, 38; on Haeckel's ' plas- 

 tidules,' 41 ; objection to Stras- 

 burger's and Haberlandt's views, 

 46; the ' pangenes ' as bearers of 

 cell-qualities, 42; on the con-' 

 tinuity of cellular organisms, 56 ; 

 on primary and accessory germ- 

 tracks, 206, 211; on the con- 

 tinuity of the germ-plasm, 207; ' 

 on galls as contradicting the lat- 

 ter, 218; galls of Cecidomyia poc€, 

 221 ; on the crosses between two 

 species of beans, 297; on plant- 

 hybrids, 300; on dichogeny, 380, 



451 



Wagner, Y. von, on gemmation 

 and fission, 145; on fission in 

 AJicrostoiiia lineare, 149; on 

 gemmation, 154 



Wallace, Alfred Russel, on Papilio 

 memnon, 376 ; on variation, 

 410 



Ward, Lester, Neo-Darwinism and 

 Neo-Lamarckism, 408 



Weeping Ash, w.\, 446 



Wiesner, Julius, on the elementary 

 structure and growth of living 

 substance, 19; on the constitu- 

 tion of protoplasm, 39; on the 

 continuity of the constituent parts 

 of the cell, 48 



Willow, rudiments of roots in the 

 shoots of the, 382 



R., on polydactylism. 



Ziegler 



Zander, 



430 



, Ernst, on the law of the 

 specific character of the tissues, 

 112; on tuberculosis, 390; on 

 polydactylism regarded as a germ- 

 variation, 430 



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