INDEX 



Proper names and titles of sections are in small capitals; page refer- 

 ences to illustrations in italic numerals. 



Aborigines of Australia, 290 



New Zealand, 290, 300 



North America, 290 



Pacific Islands, 290 



South America, 290 



Tasmania, 290 



West Indies, 290 

 "Accessory" chromosome, 180 

 Achondroplasy, 69, 117 

 Achromatin, 136 



differential distribution, 146, 209 



in cell body, 205 

 ACKERT, Effects of Selection on Para- 



mecium, 269 



ACQUIRED CHARACTERS, INHERITANCE 

 OF, 237-249 



Darwin on, 237 



Lamarck on, 237 



Weismann on, 238 



definition of, 238 



general objections to, 239 



specific objections to, 240-247 

 Adaptive responses, 46, 47 

 Adrenal gland, fed to tadpoles, 230 



influence on development, 235 

 African negro, no, 293 



in Jamaica, 300 



in U. S., 300 

 Age of human race, 287 

 Albinism, 115, 119 

 Alcoholism, 71, 118, 257 



cause of sterility, stillbirths, mal- 

 formation, dwarfs, 218, 220, 246 



induction effect on rotifers, 246 



influence on germ cells, 218 

 Alkaptonuria, 118 

 Allelmorphs, 84. Multiple, 08. 

 Alpine plants, non-inheritance of ac- 

 quired characters, 249 

 "Alternative" inheritance, 73 

 Amalgamation of races, 300 



American men of science, families 

 of, 311 



Amphiaster, 17 



AMPHIOXUS, cleavage and differen- 

 tiation, 142 



cleavage and gastrulation, 22 

 isolated cleavage cells, 222 



Ancestors, number of, 77, 78 



Ancestry, pride of, 308 



ANCYRACANTHUS, oogenesis,/55 

 spermatogenesis, 154 



Andalusian fowl, Blue, 106 



Anencphaly, 228 



Animal pole of egg, n, 195 



Annelid type of egg, 202 



Ants and bees, 231, 314, 337 



Artificial limitation of families, 311, 

 313 



Artificial parthenogenesis,, 132, 172, 

 221 



ARTIFICIAL SELECTION, 266 



chief factor in production of do- 

 mestic races, 266, 292 

 creates nothing, 266, 272 

 isolates pure lines, 266, 269 

 lacking, 294 



ASCARIS, fertilization of, 137 

 "germ track," 145, 749 

 sex differentiation in, 161 



Ascidian egg, 142, 143, 146, 147, 202, 

 224, 225, 226 



Aster, 17 



ASTERIAS, fertilization of, 12 



Astral radiations, 17 



Atavism, 73, 82 



ATHENS, 293 



Athletes, prize, 209 



Athletics, educational value of, 334 



ATTICA, illustrious men of 293, 294 



Automaton, 325 



Autosomes, 170 



363 



