Index 
Salamander, arrest of develop- 
ment of, 99; regeneration in, 
19, 140. 
Schmitt; transplantation of bony 
tissues, go. 
Schneider; starfish, 364. 
Schopenhauer; will of the spe- 
cies, 367. 
Schibeler; inheritance of more 
rapid development of barley 
seeds, 172. 
Shuberg; connection of cells of 
different tissues, 40 note. 
Schultze, Oskar; double forma- 
tions produced from frogs’ 
eggs, 133. 
Sea urchin, 80; protoplasmic 
connection of the cleavage 
cells, 39. 
Sedgwick; eggs of Peripatus, 
390; the body as a syncytium, 
39, 230. 
Self differentiation, 104, 115, II9, 
124, 130. 
Self-preservation, 369, 388. 
Self regulating mechanism, 95, 
98, 132, 135, 307. 
Semon, Richard; memory as un- 
derlying principle, 317n, 375. 
Séquard; (see Brown-Séquard). 
Sergi; emotions, 391. 
Setaria grass, 44. 
Sexual, instinct, 365 ff, 381, 380; 
vanity, 385. 
Sherrington ; 
muscular 
emotions, 
ments, 397. 
Shifting of blastomeres, 80; of 
parts of embryos, 65. 
Social evolution, 370. 
Somatic theory, 375. 
spinal dog, 376; 
accompaniment of 
301; reflex move- 
4II 
Spallanzani; regeneration in the 
salamanders, 19. 
Species, morphologic indications 
of, 146. 
Specific accumulation, 374, 400. 
Specific potential elements (see 
elements). 
Spencer, Herbert; germ plasm, 
148; Punjabi, 164; polemic 
with Weissman, 187, 211; plus 
and minus variations, 190; 
taste sense in the tongue papil- 
lae, 194; physiological units, 
225; Hertwig agrees with him, 
241; fertilization, 352; effect of 
persistence, 383; anticipation 
cause of covetousness, 387; de- 
velopment from brute instincts, 
380. 
Sphaerechnius, Morgan’s investi- 
gation of, 134. 
Spider, mother-love of, 379. 
Spina bifida, 126. 
Stahl; Myxomycetes, 372. 
Standfuss; inheritance of altera- 
tions, 174. 
Stationary physiological condi- 
tion, 361, 364, 368, 377. 
Stentor, 54 ff, 284. 
Stimuli, action of, 298; func- 
tional—see Functional stimu- 
lus, ontogenetic (see Ontoge- 
netic, stimulus). 
Stirp, Galton’s, 282. 
Stoichactis helianthus, 362. 
Stout; emotions, 390. 
Strasburger; chromosomes divi- 
sion of, 79; combination of 
paternal and maternal charac-. 
ters, 156. 
Subjective illusion of free will, 
394. 
