674 



INDEX 



Androsterone, 245 



Anemia, 61 



Angiosperms, 135n., 262-276, 598, 621; 

 594 

 alternation of generations in, 268-276 

 origin and history of, 415-417 

 and terrestrial vertebrates, 416 



Animal pole of egg, 231, 232, 235; 23 % 



Animals, classification of, 627-667; 594 

 compared with plants, 134-139 

 organizational patterns of, 177-192 



Ankylosaurs, 452; 451 



Annelida, 362, 630, 646-648; 183 



Annual rings of trees, 157; 156 



Anther, 264, 269; 263, 270 



Antheridium, 257, 261; 258, 259 



Anthropoids, 471, 474-487, 666 



Antiarchs, 427, 630 



Antibodies and antigens, 99, 369 



Antiserums, 370 



Antitoxins, 99, 101 



Aorta, 86-87, 240n.; 85, 89 



Aortic arches, 240n. 



Apes, 476-482; 483, 484, 485 



Appendix, vermiform, 12n., 361; 67 



Aqueous humor, 110; 111 



Arachnids, 425, 630, 651; 650 



Archaeopteryx, 454-455, 631 



Archegonium, 257, 261 ; 258, 259, 694 



Archenteron, 235, 361 ; 284 



Archeozoic era, 395, 401-402 



Archosaurs, 444-453, 631 



Arctic Mongoloid race, 519; 512 



Arm, 35-36, 471-472; 30 



Armenoid subrace, 517; 516 



Arteries, 86-88; 85, 89, 94 



Arthrodires, 427, 630 



Arthropods, 191, 362, 630, 648-655; 594 



Artifacts, 398, 503n. ; 520, 532, 534 



Artiodactyls, 464-465, 667; 490, 665 



Ascorbic acid, 61-62 



Asiatic group of mankind (see Mon- 

 goloids) 



Assimilation, 13; 25 



Atlanto- Mediterranean subrace, 516 



Atria (see Auricles) 



Auricles, 84; 85, 86 



Australian race, 505, 514, 525-526 



Australoid group of mankind, 505, 511, 

 514, 525-526, 537-538; 502, 512 



Australopithecines, 484-487, 666 



Autonomic nervous system, 118-120 



Autosomes, 291-292 



Auxins, 557 



Axil, 152 



Axis, plant, 141 



Axon, 107; 108 



B 



Backcross, 294-299 



Bacteria, 15, 199-202, 405-406, 602-603 



ammonifying, 200 



chemosynthetic, 199 



and decay, 200, 405, 603 



denitrifying, 200 



in energy cycle, 544 



nitrifying, 199, 200 



nitrogen-fixing, 200, 201, 570 



symbiotic, 201-202, 570 

 Bacteriophage, 400 

 Bark, 146, 157-158; 156 

 Barriers, and dispersal, 383-384 



and speciation, 350, 384-386 

 "Base-industry" animals, 574 

 Basque race, 527-528 

 Bast or phloem, 156 

 Bats, 358-359, 666 

 Benthos, 419 

 Beriberi, 60 

 Bile, 70, 72, 80 



Biogeography, 349-351, 379-386 

 Biology, content and viewpoints, 1-8 



and human affairs, 587-591 

 Biota, 380/3.. 



Biotic potential, 562-564 

 Birds, 453, 631, 661-664; 445, 594 



flightless, 456; 230, 455 



origin and history of, 453-456 



relationships of, 370-371; 445 



wings of, 358-359 

 Birth rate, differential, 320-321 

 Bivalent chromosomes, 218; 217 

 Bivalve mollusks, 643, 645; 594 

 "Black" group of mankind (see Negroids) 

 Blade, artifact, 503n.; 502, 532 



of leaf, 166 

 Blastocoele, 235; 234 

 Blastopore, 235, 361; 234 

 Blastula, 235, 361; 283, 234, 236, 238 

 Blood, 82-83, 87-88, 96 



cells of, 82-83; 20 



circulation of, 87-88, 93-97; 86, 89 



clotting of, 97-99, 131 



defense mechanisms of, 99-102 

 Blood groups, 510 



as criteria of race, 510-511 

 Blood relationships, 354-355 

 Blood-sugar-raising hormone (BSRH), 



129 

 Body cavities, 66n., 243, 628; 242 

 Bone, 27-29 



in ancestral vertebrates, 424-425 

 Bone marrow, 29, 83; 28 

 Bones, of ear, 114, 457; US 



of human skeleton, 27-40 



