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INDEX OF AVniOKS 



Spencer, physiolojjical units, 2S9; ilcvclop- 

 nient, /32. 



Stauffacher, cgg-ccntiosonic, 125. 



Stevens, fertilization, 217. 



Strasl)uri;cr, i, 7; cvlDi^lasm, 20; Korncr- 

 plasnia, 41; centrosphere, 68, 356, 324; 

 nK-inlirancs, 55; origin of aniphiaster, 82; 

 nuillipolar mitoses, 99; tlieory iif mitosis, 

 lOvUO; spernialozoids, 173; kinojilasm, 

 27, S2, 322; staining-reactions of gcrm- 

 nuclei, 220; fertilization in plants, 216, 

 219, 221; reduction, 265, 269; theory of 

 n"iaturation, 275; organization, 289; in- 

 liciitance, 7, 1S2, 351; action of nucleus, 

 420. 



Zur Strassen, giant-embryos, 296; germ- 

 cells, 14S. 



Van cler Stricht, spindle, 79; amitosis, 116; 

 fertilization, 210; reduction, 259; centro- 

 S(.ime and sphere, 312, 325. 



Strobe, multipolar mitoses, 99. 



Stuhlniann, yolk-nucleus, 156. 



Suzuki, spermatogenesis, 168. 



Swingle, mitosis, 82. 



Tangl, cell-bridges, 59. 



Thiersch anil Boll, theory of growth, 392. 



Townsend, cell-bridges, 61, 346. 



Treat, sex, 145. 



Treviranus, variation, 179. 



Unna, protoplasm, 27. 



Ussow, micropyle, 133; deutoplasm, 153. 



Vejdovsky, centrosome, 76; fertilization in 

 Khynchelniis, 192, 194; metamerism in 

 annelids, 390. 



Verworn, cell-physiology, 6; regeneration in 

 Protozoa, 344; inheritance, 359, 431. 



Virchow, I; cell-division, 10, 63; proto- 

 plasm, 25; cell-state, 58. 



De Vries, organization, pangens, 291, 327, 

 406; tonoplasts, 53; plastids, 229; chro- 

 matin, 431 ; development, 404. 



Waldeyer, nucleus, 38; cytoplasm, 41 ; cell- 

 membrane, 54. 

 Walter, frog-experiments, 419. 

 Watase, theory of mitosis, 106; staining- 



reactions of germ-nuclei, 176; nucleus and 

 cytoi)lasm, 292; asters, 305; theory of 

 centrosome, 315 ; astral rays, 321 ; cleav- 

 age of sijuid, 381 ; [Homorphology of ovum, 

 383. 386. 



Webber, spermatozoids, 144, 173; fertiliza- 

 tion, 221. 



Weismann, inheritance, 12; cell-organiza- 

 tion, biophores, 291 ; somatic and germ 

 cells, 122; ani])himixis, 179; maluiation, 

 243-246; constitution of the germ-plasm, 

 245; parthenogenesis, 281 ; theory if tle- 

 velopment, 404, 407, 432. 



Went, vacuoles, 53. 



Wheeler, amitosis, 115; insect-egg, 132; 

 egg of MyzosloiiKu 151; fertilization in 

 Myzostoiua, 20S; bilaterality of ovum. 383. 



Whitman, on Harvey, 7; polar rings, 202; 

 cell-di\ision and growth, 393; polarity, 

 384; theory of development, 400, 416. 



Wiesner, cell-organization, 290, 291. 



Wilcox, sperm-centrosome, 165; reduction, 

 257. 



Will, chromatin-elimination, 135. 



Wilson, protoplasm, 27, 44; mitosis, 106; 

 fertilization in sea-urchin, 187, 212; paths 

 of germ-nuclei, 202; origin of linin, 303; 

 astral rays, 28; centrosphere and centro- 

 some, 314; dispermy, 355; rudimentary 

 cells, 372; pressure-experiments, 41 1; 

 experiments on Ainphioxus, 410; theory 

 of development, 415. 



Von Wittich, yolk-nucleus, 155. 



Wolff, C. F., epigenesis, 8. 



Wolff, G., regeneration of lens, 433. 



Wolters, polar bodies in gregarines, 278. 



Yung, sex, 144. 



Zacharias, E., nucleoli, 34; of meristem, 37; 

 staining-reactions, 176; nuclein in grow- 

 ing-cells, 340. 



Zacharias, O., amceboid spermatozoa, 142. 



Ziegler, artificial mitotic figure, 108; amito- 

 sis, 117; sphere, 324. 



Zimmerman, pigment-cells, 102; centrosome, 



356. 

 Zoja, indejiendence of chromosomes, 299; 

 isolated blastomeres, 410. 



