Index 



413 



ance of acquired characters, 

 177 ff; action of external stim- 

 uli on development, 183 note; 

 panmixia, 184; alterations in 

 plants, 186; polemic with 

 Spencer, 187, 211; inconceiv- 

 ability of the inheritance of ac- 

 quired characters, 188; pan- 

 mixia, 190 ff; almightiness of 

 natural selection, 193, 210, 367 ; 

 taste sense in the tongue papil- 

 lae, 194; amphimixis, 194 ff; 

 stability of many species, 196; 

 functional adaptation, 197, 204; 

 similar characters of different 

 species, 205; coordinated vari- 

 ations, 214; determinants of 

 lesser or greater power of 

 growth, 212, 221 ; biogenetic 

 law, 220 ; inability of his theory 

 to explain the biogenetic law, 

 222 ; opposing Nageli, 242, 243 ; 

 Polyommatus phlaeas, 284; in- 

 heritance in unicellular organ- 

 isms, 284. 



Whitman, 2; the same vital ele- 

 ments in Infusoria and in 

 higher animals, 60; evolution, 

 105; cell formation, 136. 



Wilckens ; development of horns, 

 163- 



Will, and impulse, 392 ; free, sub- 

 jective illusion of, 394; act of, 



397- 



Wilson, E. B.; Amphioxus, 80, 

 133; cell lineage in Nereis, no 

 note; color designs in the ani- 

 mal body, 125; egg of Amphi- 

 oxus, 133; particulate inherit- 

 ance and the pangenetic theory, 

 144. 



Wireless telegraphy, 345. 



Wolff, G. ; physiologic basis of 

 the theory of signs of degen- 

 eration, 76. 



Wolff, J. ; structure of bone, 126. 



Wundt ; the nervous process con- 

 cerned in perception and mem- 

 ory, 325- 



Xenia, 74. 



Zahn; transplantation of tissues, 

 123. 



Zebra, stripes of the, 152. 



Ziegler; researches upon cell di- 

 vision, 355. 



Zoe, regeneration in, 140. 



Zoja, Raffaelo; Medusa, 80. 



Zoospores, phenomena of nervous 

 nature in, 30. 



