INDEX 



Proper names and titles of sections are in small capitals; 

 page references to illustrations in italic numerals. 



Aborigines of Australia 413 



New Zealand 413 



North America 413 



Pacific Islands 413 



South America 413 



Tasmania 413 



West Indies 413 

 "Accessory" chromosome, 146, 



151, 171-173, 277-284 

 Achondroplasy, 206, 302 

 Achromatin, 115, 119 



differential distribution, 191, 

 in cell body, 188 

 Ackert, Effects of Selection on 



Paramecium, 390 

 Acquired Characters, Ixheri- 



TANCE OF, 342-360 



Darwin on, 343 



Lamarck on, 342 



Weismann on, 343 



definition of, 345 



general objections to, 346, 

 347 



specific objections to, 347- 

 356 

 Adaptive responses, 60, 83 

 Adrenal gland, fed to tadpoles, 



334 

 African negro, 413, 419 



in Jamaica, 433 



in U. S. 433 

 Age of human race, 410 

 Albinism, 298, 301 

 Alcoholism, 212, 303, 466 



cause of sterility, stillbirths, 

 malformation, dwarfs, 

 319, 320, 321 



induction effect on rotifers, 



358 

 influence on germ cells, 319 

 Alkaptonuria, 302 

 Alpine plants, non inheritance 

 of acquired characters, 355 

 "Alternative" inheritance, 214 

 Alternatives in development, 



478, 479 

 Amalgamation of races, 413, 



432-435 

 American men of science, fami- 

 lies of, 451 

 Amphioxus, cleavage and differ- 

 entiation, 125 

 cleavage and gastrulation, 



24, larvae, 24, 25 

 isolated cleavage cells, 322, 

 323 

 Ancestors, number of, 222-224 

 Ancestry, pride of, 445 

 Ancyracanthus, oogenesis, 140 



spermatogenesis, 138 

 Andalusian fowl, Blue, 272 

 Anencephaly, 333 

 Animal pole of egg, 174 

 Annelid type of egg, 182 

 Ants and bees, 456, 499 

 Artificial limitation of families, 



454, 455 

 Artificial parthenogenesis, 322 

 Artificial Selection, 384 



chief factor in production 



of domestic races, 384 

 creates nothing, 384-392 

 isolates pure lines, 386-391 

 lacking, 422, 424, 425 



531 



