INDEX 



Archiannelida, 143 

 Archipelago, life of, 25 

 Archipterygium, 164 

 Arctos, 255-256 

 Arcualia, 31, 32 

 Arginine phosphate, 59, 60 

 Aristotle, 90 

 Arrow worms, 149 

 Arthropoda, 143-146 



cuticle of, 144 



fossils of, 71 



origin from Annelida, 146-147 



taxonomy of, 144 



variety of, 143-144 

 Articulata, 147 

 Artiodactyla, 176 

 Ascaris, 4 



Aschelminthes, 139 

 Asia-North America corridor, 315-316 

 Asteroxylon, 115 

 Atlanthropus, 190 

 Atmosphere, primitive, 93 

 Auerbach, Charlotte, 209 

 Auricularia larva, 157 

 Australian Region, 18 

 Australia-South America distribution, 321 

 Australopithecines, 185-188 



evaluated, 187-188 



skull of, 185, 186 



teeth of, 187 

 Autocatalytic systems, origin of, 95 

 Autopolyploidy, defined, 293 

 Autotetraploidy, in evolution, 296-298 



meiosis in, 297-298 

 Aves. See Birds 

 Axelrod, D. I., 127, 325 



Babcock, E. B., 28, 85, 209, 213 

 Baboon, allomctry in, 259, 261-262 

 Bacteria, 89 



autotrophic, 97 



chemotrophic, 97 



diversification of, 96 



evolution of, 98-100 



heterotrophic, 97 



illustrated, 99 



iron, 97 



mitosis in, 98 



nitrifying, 97 



origin of, 95 



phylogeny of, 99-100 



relation to liigher organisms, 99-100 



sexual reproduction in, 98 



sulfur, 97 

 Bactcriochlorin, 99-100 

 Bactcriochlorophyll, 99-100 

 von Bacr's principles, 52 

 Balano^lossus, 157 

 Baldwin, E. J., 110 

 Barhatula, 221 

 Bar Eye gene, 219-221 

 Barlow, Lady Nora, 26 

 Barnacles, embryology and classification 



of, 50-51 

 Barriers, 272-273, 314 



geographical, 18-19 



Bat, vampire, 18 



wing of, 38, 39, 41-42 

 Bates, H. W., 244 

 Bateson, W., 81, 83, 85, 265 

 Bathyal zone, 21 

 Baur, E., 207, 208 

 Beagle, H. M. S., 7, 14 

 Bears, 18 



teeth, in evolution, 255-256 

 de Beaufort, L. F., 26 

 Beetles, wingless, 44 

 Behavior, and isolation, 275-276 

 Bellamy, A. W., 279 

 van Beneden, E., 135 

 Bergmann's rule, 211 

 Bering Strait, as a filter bridge, 316-317 

 Bemiuda, animals of, 25-26 

 Berrill, N. J., 157, 177 

 Biochemistry, and evolution, 54-61 



and recapitulation, 59-61 

 Biogenetic Law, 81 



defined, 45 



difficulties of, 51-52 

 Biogeographical regions, 17, 18 

 Biogeography, 14-26, 308-326 



Darwinian explanation of, 21-22 



significance of, 26 

 Bipinnaria larva, 147, 148 

 Bipolar mirrorism, 320-321 

 Biradial symmetry, defined, 135 

 Birds, 29 



adaptations to flight, 171 



aortic arches of, 49 



continental, 25 



endemic, 23 



fibula of, 43 



origin of, 171 



running, 172 



skeleton of, 34 



stomach contents of, 247-248 



teeth, and recapitulation, 50 



wing of, 41-42 

 Bivalves, 142 

 Black, D., 189 



Blackbird, red-winged, 27, 28 

 Blair, W. F., 275 

 Blakeslee, A. F., 287 

 Blastea, 134 

 Blastula, 135 



Blood groups, of Primates, 59 

 Blossum, P. M., 273 

 Blue-green algae, origin of, 100 

 Blum, H. F., 110,213 

 Bold, H. C, 127 

 Boltwood, 63 

 Bony fishes, 160-166 



See also Osteichthyes 

 Borradaile, L. A., 154 

 Bottleneck, evolutionary, 260-261 

 Boyd, W. C, 335, 337 

 Brachiation, 181 

 Brachiopoda, 148 



fossils of, 71 

 Bradley, M. V., 305, 307 

 Bradijornis, mimicry in, 245-246 

 Bridges, 315-320 

 Bromus, genome analysis of, 304 



S40 



