402 



COOK 



millipeds 270, 312 

 mitapsis 338, 397 _ _ 



Mivart. on abrupt variations 231 



on natural selection 283 

 modes of evolutionary motion 286 

 mongrel reversions 388 

 monkeys 217 



mules sometimes fertile 385 

 mutation theory 308, 313 

 mutations 274 



degenerative 309, 310 



discriminate 393 



diversity of 387 



of tomato 265 



like hybrids 394 



parallel 221 



post-reproductive 352 



prepotency of 393 



teratic neisms 236 



versus species 310 

 mutative variation 392 

 myxomycetes, accommodation in 208 



chromatin of 354 



Naegeli's theory 256, 300, 316, 378 

 natural selection 227, 232 



selection negative 321 

 neism 236, 269 

 neotopism 236, 261 

 network motion 323 

 new characters prepotent 319 



place effects 236 



variations 269 

 nuclear deterioration 354 



(Edogonium 239 



olfactory cones of millipeds 312 



organic elasticity 200 



utility 215 

 overlapping of generations 367 

 Oxalis 372 

 Oxydesmidse 270 

 paint-root 257 

 pangenesis 316, 329 

 panmixia 256 



paragamic cell-structures 368 

 parasitic fungi 241 

 tendencies 217 

 parthenogenesis 398 

 particularization 289 

 pendulum analogy 390 

 pheasants, plumage over-developed 217 

 philosophical systems 296 

 physiological species 210 



physiology of cells 356 

 of evolution 304 

 of species 362 



pigeon experiment 337 



plasmapsis 397 



plasticity in evolution 203 



Poa 376 



polar heredity 345, 348 



politism 242 



porric species 376 



porrism 2^6, 266 



Portulaca 376 



positional relations of chromosomes 353 



post-conjugate heredity 344 



predetermination hypothesis 327 



prefiguration hypothesis 327 



premature socialization 367 

 prepotency 231, 271 



of variations 319 

 preservation of characters 319 

 protective colors 213 

 proterandry in coffee 275 

 proterogyny in coffee 275 

 Prowazek, on chromatin 354 

 Prunus, graft-hybrid 352 

 Ptolemaic astronomers 293 

 pure science 360 

 purity of germ-cells 336 



quail, subspecies of 267, 377 



race evolution 335 

 rapidity of evolutionary motion 308 

 recessive characters 337 

 reproduction defined 330 

 restricted descent 376, 385, 388 



descent, theories of 378 

 reticular descent 197 

 reversions 388, 391 

 root-crops, tropical 381 

 ropic species 370 

 Russian thistle 261 

 rust fungi 241 

 rye, a coherent species 384 



saltatory evolution 299, 305, 309 

 screech-owls, supersexes of 375 

 secondary sexual characters 346 

 sections of species 364 

 seedless plants 273, 378 



species unknown 381 

 segregation 278 

 selection defined 278 



function of 389 



inadequate 198 



induces mutation 392 



in mutation theory 310 



preserves variations 390 



versus hybridization 390 

 selective perfection of adaptations 212 



restriction of descent 379 

 self-fertilization 377 

 semisexes, definition of 372 

 semisexual species 372 

 sex and Mendelism 348 



-determination 347, 351 



-differentiation 350, 355 

 sexual characters 373 



selection 374 



species 372 

 sexuality of conjugate organisms 349 



of plants 350 

 Shamel, on tobacco 385 

 sheep in tropics 260 

 social organization 217, 242 



of cells 238 

 socialization, premature 367 

 speciation 205, 276, 279 



defined 278 



theories of 279 

 species and subspecies 268 



constitution of 356, 369, 376 



in motion 294, 306 



meaning of 359, 362 



physiology 362 

 specific organization 327 



