INDEX 



ACANTHOCEPHALA, 340 



Acarus scabiei, 351 



Accessory idioplasm, 263 



Accidental polyembryony, 218 



Acquired immunity, 373 



Actinozoa, 339 



Adami's theory of heredity, 274 



Aerobic bacteria, 52 



Afferent neuraxes, 152 



African lethargy, 361 



Agassiz on classification, 308 



Aggressins, 364, 367 



Alexine, 387 



Allelomorphs, 269 



Allergia, 377 



Allman on geotropism, 66 



Alternation of generation, 197 



Altmann, 95 



Amboceptor, 379 



Amnion, 226 



Amoeba and electric currents, 61 



conductivity in, 69 



food reactions of, 49 



mechanical stimulation, 44 



movement in, 74 



structure of, 110 

 Amoeboid movement, 74 

 Amphiaster, 106 

 Amphimixis, 116, 193 

 Amphipyrenin, 98 

 Anabolism, 83 

 Anaphase, 105 

 Anaphylaxis, 377 

 Anaximander, 21 

 Anchylostoma, 354 



duodenale, 340, 354 

 Ancistrum, 338 

 Anesthetics, 37 

 Angiostomum, 209 



Animal kingdom, relations of di- 

 visions of, 305 



Animalculists, 212 



Animals, classification of, 312 

 conductivity in, 70 

 geotropism in, 66 

 reproduction in, 200 



Annulata, 341 



Anopheles, 358 



Anophlophyra, 338 



Antheridium, 190, 199 



Anthers, 199 



Anthrax, vaccine for, 395 



Antibodies, 317, 376 



Antigen, 317, 376 



Antitoxins, 317 

 therapeutic, 378 



Apanteles congregatus, 346 



Arachnida, 347 



Archegonia, 199 



Archenteron, 222 



Archiblast, 221 



Archicele, 221 



Arcus senilis, 449 



Aristole, 282, 301 



Arnold, 107 



Arthropoda, 341 



Ascaris lumbricoides, 340, 354 



Ascogonium, 187 



Ascus, 188 



Asexual reproduction, 181 



Asphyxia, 54 



Associative memory, 172 



Atrophic changes of age, 446 



Auricles of heart, formation of, 

 139 



Autogenetic cells, 259 



Automatic action, 178 



Automatism, 178 



