INDEX. 



Adaptation, complex and cor- 

 related, not explicable by 

 selection, 144; Friedlander's 

 discussion of, 392; lack of, in 

 egg-laying habit of Phrygani- 

 dia calif ornica, 68; the great 

 need of explaining, 380; not 

 all explicable by Lamarckism, 

 272 



Amphimixis, Weismann's prin- 

 ciple of, 180 



Anosia, mimicry of, by Basi- 

 larchia, 49 



Anti-Darwinism, present-day, 4 



Baldwin, J. M., theory of ortho- 

 plasy, 208 



Basilarchia, mimicry of Anosia 

 by, 49 



Bateson, W., records of discon- 

 tinuous variation, 33; sugges- 

 tion that mutations are Men- 

 delian recessives, 351 



Battle of the parts, Roux's 

 theory of, 2OI 



Biologists, many not satisfied 

 with the selection theory, 89 



Biophor, 195 



Brown-Sequard, experiments on 

 guinea pigs, 290 



Buffon, theory of ultimate 

 structure of protoplasm, 216 



Bumpus, H., example of in- 

 creased variability due to 

 emancipation from selection, 

 56 ; references to papers by, 69 



Burbank, Luther, belief in La- 

 marckism, 272; scientific as- 

 pects of work of, 310 



Callosamia promethea, Mayer's 

 . experiments with, 120 

 Carcinus, Weldon's selection 



experiments on, 158 

 Castle, W. S., discussion of 



mutations theory, 364 



Chance, law of, variation accord- 

 ing to, 32-59 



Characters, numerous, useful 

 only in highly perfected state, 

 49; species, of no utility, 38 



Colour and pattern of insects, 

 Piepers' antagonism to selec- 

 tion explanation of, 69 



Conn, H. W., discussion of the 

 chances of death, 83; discus- 

 sion of selective value, 182; 

 statement of objection to se- 

 lection, based on trivial char- 

 acters, 40 



Cope, E. D., belief in ortho- 

 genetic evolution, 323; claim- 

 ing that natural selection can- 

 not make new characters, 185; 

 theory of orthogenesis, 285 



Correlation, references to papers 

 on, 184 



Crab, hermit and polyp, sym- 

 biosis of, 23 



Crabs, Weldon's experiments on, 

 158. 



Cunningham, J. T., criticism of 

 Weldon's experiments on 

 crabs, 161 ; discussion of 

 orthogenesis, 326 ; experiments 

 on flatfishes, 296; explanation 

 of secondary sexual charac- 

 ters, 354 ; theory to explain sec- 

 ondary sexual differences, 124 



Dall, W., belief in sudden 

 species-change, 330 



Darwin, C., attitude toward de- 

 terminate variation, 34 ; basis 

 of theory of sexual selection, 

 112; explanation of descent, 

 13; on race origin from sports, 

 357 ; theory of sexual selec- 

 tion, in; theory of ultimate 

 structure of protoplasm, 218 



Darwinism attacked, 25 ; attack 

 on, by Dennert, 7; concilia- 



397 



