. Biology; the story of living things. INDEX 617 lifo habits of, 59 relation to diseaso, 021 relation to free nitrogen, oO-CiO spores of, 16(5 structure of, 165-166 Bacterial infections of plants, 579 Bacterins and their use, 630 Bacteriophage, 627 Bacterium, 71 Baird, 7 Balancing organ, crustacean, 372 Balanoglossus, 105 Balanus, 500 Balkans, 561 Banting, 296, 397 Bark, 247, 248 Barnacles, 99, 500 Barrell, estimate of geological time by, 553, 554 Barriers biological, 32, 533 chemico-physical, 30 geographical, 31, 523 mountain, 30 Basic environments, 7 Basidiomycetes, 73 Bateson, experiments o
. Biology; the story of living things. INDEX 617 lifo habits of, 59 relation to diseaso, 021 relation to free nitrogen, oO-CiO spores of, 16(5 structure of, 165-166 Bacterial infections of plants, 579 Bacterins and their use, 630 Bacteriophage, 627 Bacterium, 71 Baird, 7 Balancing organ, crustacean, 372 Balanoglossus, 105 Balanus, 500 Balkans, 561 Banting, 296, 397 Bark, 247, 248 Barnacles, 99, 500 Barrell, estimate of geological time by, 553, 554 Barriers biological, 32, 533 chemico-physical, 30 geographical, 31, 523 mountain, 30 Basic environments, 7 Basidiomycetes, 73 Bateson, experiments of with sweet peas, 451 Bats, 115, 534 specialization of wing, 544 Bauhin, Kasper, 64 Bayliss, 392 "Beagle," voyage of, 508, 518 Bean, Professor estimate of age of flints by, 547 estimate of geological time bv, 553 Bears, 385, 509 Bee head of worker, £04 mcjuth parts, 203-;^ Beebe, William, 22, 27 Beetles, 101 Bergson, theory of evolution of, 527 Behavior, definition of, 366 Behavior patterns, 381-382 Behaviors, as adaptive responses, 380- 381 Belly, of muscle, 338 Benedict, 312 Berbers, 561 Bering Sea, 511 Bering Strait, 509 Bernard, Claude, 391 Berthold. A. A., 391 Best, 296, 397 Biceps, 338 Biennials, 240 Bilateral symmetry, evolution of, 532 Bile, 296 H. w, H.—42 Binary fission, 411 Anieba, 155 Paramecium, 160 Binomial nomenclature, 63, 64, 65 liiogenetic Law, 501 Biological surveys, 603 Biometrv, 440 Birds, 103, 113 economic value of, 577-578 embryological adaF)tati(>ns in, 487 evolution in, 532 hearts of, 497 in mesozoic era, 452 in recapitulation theory, 501 insect eating, 578 physical adaptations in, 491 relation of blood to other animals, 514 rise of in evolution, 513 seed-eating, 578 sex inheritance in, 468 species of lice on, 524 Bison distribution of, 509 La Brea fossils of, 477 Blackberry, white, 455 Black stem grain rust, 57 Bladderwort, leaf of, 54 Blastocoel, 418 Blastoderm, 417 Blastomeres, 432 Blastopore, 4^0 Blastostvle, Obelia, 186 Blastula
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