516 



INDEX 



"germ track," 126, 127 



sex differentiation in, 144. 

 Ascidian egg, 119, 120, 124, 168, 

 317, 319, 320, 322 



type, 178 

 ASSHETON, cleavage of egg of 



sheep, 23 

 Aster, 109, 111 

 Astral radiations, 110 

 Atavism, 209 

 ATHENS, 406, 407 

 Athletes, prize, 415 

 Athletics, educational value of, 



476, 477 

 ATTICA, illustrious men of, 405- 



407 

 Automaton, 459, 461 



Backbone, development of, 28, 



29 



"Back cross," ratios of, 237, 238 

 Bacteria, reactions to light, 49 

 Baldness, inherited, 203 

 BALZAC, heredity a maze, 297 

 Barbarism, 363, 396, 411, 486 

 BARDEEN, X-rays on sperma- 

 tozoa, 311, 496 



BATESON, Blue Andalusian, 266 

 brachydactyl hand, 292 

 "homozygote and heterozy- 



gote," 228 



on Mendelism, 225, 493 

 BATESON and PUNNETT, on sweet 

 pea hybrids, 256, 257, 258 

 . BATTR, 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 



BEETHOVEN, 473 

 Behavior, dogs, cats, monkeys, 



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 



BERKELEY, BISHOP, 446 

 "Biophores" of Weismann, 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 

 "BLENDING" INHERITANCE, 208, 



280, 282-287 



in length of ears in rab- 

 bits, 285 



in length of skull in rab- 

 bits, 285, 286 

 in skin color of mulatto, 



282-285, 88 

 "Blood lines," 379 

 BOND, negro X white cross, 288 

 BOULE, Chapelle - aux - Saints 



skull, 397 

 BOVERI, 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 

 BROMAN, death of families, 436 



496 



BROOKS, 214, 496 

 Buddhistic belief in transmigra- 

 tion, 40 

 BURBANK, new combinations of 



characters, 381 

 mutations, 384 



