Index - 701 



B 



Bacilli. 173, 176, 602 



Backcrossing, 486-87 



Bacteria, 19, 20, 36, 48, 49, 55, 163, 173, 315, 442, 

 601-02; cellulose, 177, 179; chemotrophic, 181- 

 82; decay and, 177; denitrifying, 177; life cycle 

 of, 208; milk-souring, 177; nitrate, 182, 185; 

 nitrite, 182, 185; nitrogen-fixing, 180-81, 185; 

 putrefaction and, 177; saprophytic, nutrition of, 

 176-77; sulfur, 181; vinegar, 177 



Bacterial transformation, 520, 521 



Bacteriology, 14 



Bacteriophages, 8. 9, 10 



Ballantidium coli, 628 



Barber's itch, 607 



Barium meal, 309; liquefaction of, factors involv- 

 ing, 310 



Barron. E. S. G., 106 



Basal metabolic rate, 344 



Base-pair rule, 134, 135, 523, 524, 525 



Bases, 71, 74-75; abiotic, 587, 588; organic, 88, 89; 

 pyrimidine, 137 



Basidiomycetes (club fungi), 606-07 



Basidiosporcs, 606 



Bast. 243, 244 



Beadle, G. W., 529 



Beaumont, W„ 305 



Bees, 655, 658, 659-60 



Behavior, 467-70; conditioned reflexes, 468-69; 

 external, 544; insect, 660; language as mode of, 

 470; of man, 469-70; modifiability of, 468-69; 

 unconditioned reflexes, 468 



Benzer, S.. 524. 526 



Beriberi, 351-52 



Bicarbonates, 365 



Bile, 296, 310, 312, 313-14; flow of, 314; secretion 

 of, 343 



Bile duct. 313, 333 



Bile pigments, 313 



Bile salts, 313 



Bilirubin. 313 



Biliverdin. 313 



Binary fission. 55-56, 208, 393-96 



Biochemical relationships among organisms, 

 557-59 



Biology, 3, 14-15; aim of, 6; subdivisions of, 14; 

 values of, 14-15 



Bioluminescence, chemistry of, 442-43 



Biotin, 353, 530 



Biparental inheritance, 51, 55 



Birds (see Aves) 



Blackman, F. E., 160 



Bladder, 283, 384, 385, 387 



Blastocoel, 277 



Blastomycosis, 604 



Blastopore, 278 



Blastula, formation of, 277 



Blind spot, 424 



Blindness (see Color blindness; Night blindness) 



Blood, 118, 289-90, 319, 320-26; carbon dioxide- 

 carrying capacity of, 364-66; coagulation of, 

 323-25; components of human, 321; glucose 

 level, regulation of, 341; lymph and tissue cells, 

 relationship between, 329-30; oxygen-carrying 

 capacity of, 363-64 



Blood cells, 289 



Blood platelets, 289 



Blood types, 325-26 



Blood vessels, 327-28; structure of, 328-29 



Blue-green algae (see Algae) 



Blutpunkt, 388, 413 



Bolus, 300, 301 



Bonds, hydrogen, 87. 521-22; peptide, 85, 86, 87; 

 high-energy phosphate, 143: high-energy sulfur, 

 154, 155 



Bone, 289 



Bonner, J. T., 266, 532, 533 



Borthwick, H. A., 266 



Botany, 14 



Bowin, A., 520 



Bowman, W., 372 



Bowman's capsule, 372, 375, 376 



Boysen-Jensen, 261 



Brachet, J., 525 



Brachiopoda, 643-44, 645 



Brain, 458, 664; structure of, 458-60 



Brain stem, 459, 464 



Branchiopericardial canal, 319 



Branchiostoma, 665 



Bread mold, 210, 211; nutrition in, 175-76 



Breathing, control of, 367-68; movements, 361-62; 

 reflexes, 367 



Breeding, selective, 510, 516-17 



Breeding experiments, 480-95; allelic genes, 484; 

 complementary genes, 490; crossing over, 491- 

 93, 494; dominant genes, 484; genie potency, 

 variations in, 489-90; genotype vs. phenotype, 

 484-87; incomplete linkage, 491-93; independ- 

 ent assortment, 487-89, 490; linkage (dependent 

 assortment), 490-91, 492; localization of genes 

 in the chromosomes, 493-95; Mendel's law, 490; 

 Mendelian inheritance, 481-84; Morgan's laws, 

 495; segregation, 481-84, 490; supplementary 

 genes, 490 



Briggs, R., 531 



Brittle stars, 660, 661, 664 



Bronchi, 359, 360 



Bronchioles, 359 



Brown algae (see Algae) 



Brownian movement, 92 



Bryophyta (moss plants), 610-11; life cycle of, 208; 

 nutrition of, 239-42; organs and tissues of, 

 241-42 



Bryozoa, 642-43, 644 



