INDEX 



Abbe, 31 



Abdomen, 318, 319, 329, 340, 393, 



394* 

 Aberration, 679, 680 

 Abiogenesis, 732 



Absorption, 82, 226, 227, 353, 430 

 Acclimation, 813 

 Accretion, 95, 101 

 Acetabulum, 423,* 425 

 Acetylcholine, 503 

 Achilles tendon, 426* 

 Achromatic figure, 64 

 Aciculum, 307* 



Acid, 84, 87, 88, 169, 232, 429, 476 

 Acontia, 291* 

 Acoustic, 495 

 Acquired characteristics, 712, 722, 746, 



747 

 ACTH (pituitary hormone), 510 

 Actinomycosis, 659 

 Actinopoda, 274 

 Adaptation, 96, 101, 721-731, 723*- 



728* 

 Adaptive radiation, 729 

 Adductor muscle, 312,* 313,* 426* 

 Adipose {see Tissues) 

 Adrenal gland, 507,* 508, 511 

 Adrenalin, 511 {see also Endocrine 



glands) 

 Aeciospore, 129, 167, 182, 182* 

 Aedes {see Mosquito) 

 Aerobe, 122, 170 

 Aestivation, 594 

 African fever, 660 



Agaricus (Psalliota) {see Mushroom) 

 Agassiz, 803 



Agglutination, 519, 524 

 Agranulocyte, 484-486 

 Agriculture, 775, 776 

 Air bladder, 331, 332* 



cavity, 141,* 147,* 188, 211, 215, 



224, 226, 411 

 sac, 396,* 397, 403,* 405, 490,* 492 

 sinus, 469* 

 Albumin, 89, 311, 312* 

 Alcohol, 252 



Aleurone, 210 



Algae, 109-119, 150-166, 249, 250 

 blue-green, 109, 110, 113,* 151-155, 



249 

 brown, 109, 110, 116, 118,* 153, 



154, 160-162, 249 

 desmids, 115,* 116, 153-159 

 diatoms, 116, 117,* 153, 154, 159, 



160, 249 

 economic importance, 249, 250 

 green, 109, 110, 114-116, 115,* 153- 



159 

 red, 109, 110, 118, 119,* 153, 154, 



162-165, 163* 

 yellow-green, 109, 110, 116, 117,* 



153, 154, 159, 160 

 Algalike fungi ( Phycomycetes, 109 {see 



also Mold) 

 Allantois, 451,* 453 

 Allele (Allelomorph), 525, 682, 694* 

 Alligator, 338* 

 Allium (onion) {see Mitosis) 

 Alternation of generations {see Meta- 

 genesis) 

 Alveolar, 74, 75,* 464* 

 Alveoli, 434, 490,* 492 

 Amboceptor, 520 

 Ambulacral, 300,* 301,* 302,* 303, 



304,* 305* 

 Ambystoma {see Salamander) 

 Amino, 88, 429, 476 

 Ammonia, 651 



Amnion, 451,* 452, 453, 455* 

 Amoeba, 274, 275,* 344-349, 345*- 



348* 

 Amoebic dysentery, 533,* 784 

 Amoebocyte, 283* 

 Amphiaster (achromatic figure), 64 

 Amphibia, 331, 333*-335,* 421-441, 



653 {see also Frog) 

 Amphineura, 309, 309* 

 Amphioxus, 328,* 329 

 Amphoteric, 89 

 Ampulla, 301,* 302,* 304 

 Amylopsin, 429, 476 

 Anabena, 113,* 154, 155 

 Anabolism, 93, 101 



*Asterisk following reference indicates page with illustration. Also refer to Glossary in the 

 Appendix for definitions, principles, theories, and additional references. 



867 



