INDEX 



405 



ductiou of flowers, ii. 276 ; on I'egenera- 

 tiorij ii. 32. 



Voigt, Walter, experiments in regenera- 

 tion, ii. 6 ; on Planarians, ii. 25. 



Voit, Carl von, influence of nutrition on 

 bodily size, ii. 268. 



Volvocinete, reproduction in, 257. 



Vries, de, asymmetrical curves of fre- 

 quency, ii. 234 ; theory of mutations, 

 ii, 317 ; Pangen theory, 380. 



Wagner, Franz von, regeneration in Lum- 



briculus, ii. 27. 

 Wagner, Moriz, on the influence of isola- 

 tion, ii. 284. 

 Wahl, Bruno, on the development of 



Erisialis, 399. 

 Wallace, on the immunity of Heliconiidae, 



99 ; on the causes of the coloration of 



butterflies, 211. 

 Wasmann, Erich, on transition forms in 



ants, ii. 93 ; on sounds produced by 



ants, ii. 83. 

 Weaver birds, ii. 290. 

 Whales, their origin through adaptation, 



ii- 313- 

 Wheeler, role of the centrosphere in the 



ovum, 309. 

 Wiedersheim, mdimentary organs in man, 



ii. 226. 



Wiesner, the smallest vital particles, 369. 

 Wing-priniordia in insects, 364. 

 Winkler, Hans, experiments on artificial 

 parthenogenesis, 307, 333 ; on merogony, 



343- 

 Wolff, G., regeneration of the lens, in 



Triton, ii. 19. 

 Wolff, K. v., the founder of the epigeuetie 



theory of evolution, 352. 

 Wroughton, Robert, production of sounds 



by Indian ants, ii. 95. 

 Wiirtemberger, form-series of ammonites, 



ii. 176. 



Xenia, ii. 58. 



JCylina, protective coloui'ing of, 82. 



Yolk of egg, 282. 



Zehnder, the living substance made up of 

 fistella?, ii. 217 ; polymorphism in ants, 

 ii. 99 ; on the Lamarckian principle, ii. 

 99-106 ; on the skeleton of Arthropods, 

 ii. 103 ; effect of amphimixis, ii. 223. 



Ziegler, Ernst, on deformities, ii. 138. 



Ziegler, H. E., experiments on merogony 

 in sea-urchin ova, 342. 



Zojii, experiments with the ova of Medusae, 

 407. 



Zoosperms, 273, 278, 279. 



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