I N 



Wohler, Friedrich, German chemist, 406, 431, 



448, 450 

 WoKF, Caspar Friedrich, German naturalist, 



183, 148-2.51, 169, 195, 308, 356, 361, 362., 



365, 368, 385, 390, 431, 494, 531 

 Wolff, Christian, pupil of Leibniz, 2.48, 2.52. 

 Wollaston, 185 

 Wonders of Nature, The, by Sakarja ben Mu- 



hammed, 73 

 Wotton, Edward, mediasval scientist, 92.-93 

 Wundt, Wilhelm, 599 



Xenophanes, Greek philosopher, founder of 

 Eleatic School, 15, zz, 99 



Yerks, R. M., American psychologist, 601 



Zeitschrift fur wissenschaftliche Zoologie, founded 

 by Siebold and Kolliker, 418 



D E X XV 



Zellbildung und Zellteilung, cytological work by 

 Strasburger, 535 



Zeno, philosopher of Eleatic School, 16 



Zoography development during the Renais- 

 sance, 92.-98; contribution of BufFon to, 117 



Zoology, status of science in early Chi- 

 nese civilization, 7; in Greek civiliza- 

 tion, 19; Pliny's contribution to, 57; 

 Gesner's contribution to, 93, 94; reforms 

 by Linnxus, 2.13, Z15; contribution of 

 Cuvicr to, 333, 334, 337; development of 

 experimental method in, 578 



Zoonotnia, by Erasmus Darwin, Z94 



Zooto)nia Democritea, anatomical work by 

 Severino, 107 



Zur Abwehr des ethischen, des sozialen, des poli- 

 tischen Darwinismus, polemical treatise by 

 O. Hertwig, 569 



Zygote, definition of, 589 



