INDEX 



Abdominal ribs, 133 

 Absorption in intestine, 299 

 Academy of Natural Sciences, 40; 



beginnings, 52, 53 



collections, 54 



workers, 53, 54 



ill. 53 



Accessory, see Chromosomes 

 Achatinellidae, see Hawaiian snails 

 Acquired characters, see Inherit- 

 ance 

 Adaptation, non-life, 281-2 



organisms, 281 

 Adrenal gland, 321-3 

 Adrenalin, function, 321-3 



see Biological remedies 

 ^pyornis, 135 

 Agassiz, A., 350 

 Agassiz, Louis, 349, 481; life, 38-9 



opponent of Darwin, 45 



ill. 38 

 Age, see Amphibia, fossils; Lyco- 



pods; Reptiles; Trilobites 

 Agramonte, 451 

 Aggressive resemblance, 338 

 Aigrette, see Egret 

 Air sacs, see Birds 

 " Albatross, " 350-1, 365; ill. 350, 



364 



Albatross, see Isolation 

 Alcohol, 295; influence on chick- 

 ens, 251-2 



guinea-pigs, 251-2 



rats, 251 



see Crustacea, light response 

 Alfalfa, destruction by mice, 388 



see Nitrogen fixation 

 Algse, alternation of generations, 

 100 



blue-green, 95, 480 



fossil, 117 



hot springs, 381 



reproduction, 96 



symbiotic, 92 



see Chromatophores, Nucleus, 



Shells 

 Allen, B. M., 471 



485 



Allen, J. A., 88, 163 

 Alligator, distribution, 180 

 ill. 179 



see Sexual Selection 

 Alluring resemblance, 338 

 Alternation of generations, 98 

 significance, 103 



see Algae ; Ferns, reproduction ; 

 Liverworts; Medusa; Mos- 

 ses; Polychaeta; Polyzoa; 

 Protozoa ; Tunicates 

 Amblystoma, metamorphosis, con- 

 trol, 223, 224; ill. 225 

 Amboceptor, 445-6 

 American Association for Advance- 

 ment of Science, 46 

 American Breeders' Association, 



269 



American Fish Cultural Associa- 

 tion, 425 



American Fisheries Society, 425 

 American lemur, see Tarsier 

 American Museum of Natural His- 

 tory, collections, 44 

 exhibits, 55-9 

 founded, support, 54 

 work, 55-9 

 ill. 54 



American Naturalists' and Geolo- 

 gists' Society, 46 

 ' ' American Ornithology, ' ' see 



Wilson, A. 

 Amino-acids, 296 

 Ammonia, 298 



Ammophila, nesting instincts, 319 

 Amoeba, 95, 243; reactions, 301-4 

 complexity of structure, 304 

 volition, 281 

 ill. 94, 302 



Amphibia, blood vessels, 89 

 foot prints, 123 

 fossils, 121-2 

 regeneration, 193 

 sex determination, 209 

 spread, 154 

 see Germ cells, origin 

 Amphioxus, indeterminate devel- 

 opment, 192 

 larval asymmetry, 110 



