516 



INDEX 



"germ track," 126, m 

 sex differentiation in, m 

 Ascidian egg, 119, IW, n^, 168, 



S17, 319, sso, sn 



type, 178 

 AssHETON, cleavage of egg of 



sheep, S3 

 Aster, 109, 111 

 Astral radiations, 110 

 Atavism, 209 

 Athens, 406, 407 

 AtUetes, prize, 415 

 Athletics, educational value of, 



476, 477 

 Attica, illustrious men of, 405- 



40T 

 Automaton, 459, 461 



Backbone^ development of, 28, 



29 

 "Back cross," ratios of, 237, 338 

 Bacteria, reactions to light, 49 

 Baldness, inherited, 203 

 Balzac, heredity a maze, 297 

 Barbarism, 363, 396, 411, 486 

 Babdeest, X-rays on sperma- 

 tozoa, 311, 496 

 Batesost, Blue Andalusian, 266 



brachydactyl hand, 292 



"homozygote and heterozy- 

 gote," 228 



on Mendelism, 225, 493 

 Batesoit and Pun isTETT, on sweet 



pea hybrids, 256, 257, 258 

 Baub, factors for flowers of 

 Antirrhinum, 259 



induction effects of poor 

 soil, 349, 493, 496 

 Beans, pure lines of, 197, 205 

 Bees, and Ants, 440, 483 



influence of food on devel- 

 opment, 326 



workers, queens, drones, 

 326 

 Beethovek, 473 

 Behavior, dogs, cats, monkeys, 

 64 



fish and frog, 465 



lower organisms, 44 

 modifiability of, 68 

 Paramecium, 61-63, 66 

 plasticity of, 71, 464 

 rigidity of, 71 

 test of psychical processes, 



48 

 worms, star-fish, Crustacea, 

 vertebrates, 63, 64, 66, 70, 

 71 

 Bekkeley, Bishop, 446 

 "Biophores" of Weismaiin, 100 

 Birthrate and deathrate, nor- 

 mally equal, 432 

 both decreasing, 433, 434 

 decreasing most in best 



families, 434 

 in Massachusetts, 435 

 Bivalent chromosomes, 133 

 Blastula, 25, 26 



"Blendiu-q" inheeitance, 208, 

 280, 282-287 

 in length of ears in rab- 

 bits, 285 

 in length of skull in rab- 

 bits, 385, 286 

 in skin color of mulatto, 

 282-285, 288 

 "Blood lines," 379 

 BoKD, negro X white cross, 2SS 

 BouLE, Chapelle - aux - Saints 



skull, 397 

 BovEHi, chromosomes differ in 

 value, 156, 165 

 dispermic eggs, 313, 496 

 Brachydactylism, 199, 292, 293 

 Brain, development, 28 



size and weight, 472, 473 

 Breeder, methods of, 416 

 Bromait, death of families, 436 



496 

 Brooks, 214, 496 

 Buddhistic belief in transmigra- 

 tion, 40 

 BuRBANK, new combinations of 

 characters, 381 

 mutations, 384 



