INDEX 



649 



Cavity, buccal, 284 

 Cell division 



mitotic, 141-144 



theories concerning, 140 

 Cell of mesophvll of leaf, 129 

 Cell theory, 128, 138, 139 

 Cell wall and protoolasm, 134 

 Cells 



comparative size of, IJfO 



tissue, 144-148 

 Cement, 287 



Cenozoic era, 476, 512, 513, 553, 554 

 Centipedes, 532 

 Central nervous system, 337, 420 



early development of, 345, 346 

 Centrioles, 416 

 Centrosome, 142 

 Centrosphere, 142 

 Cephalochordata, 105 

 Cephalopoda, 97 

 Cercariae, 219, 231 

 Cerebellum, 346, 350, 353 

 Cerebral hemispheres, 346 

 Cerebrospinal fluid, 345 

 Cerebrum, 346, 347, 353 



human, 545 

 Cestoda, 85 

 Cestus, 83 

 Cetacea, 117 

 Chaetognatha, 93 

 Chaetonotus, 89 

 Chaetopoda, 93 

 Chalina, 79 

 Chamberlin, 407 

 Change, universality of, 483-485 

 Chara, 71 



Charadriiformes, 114 

 Charophyceae, 71 

 Chelonia, 111 



Chemical co-ordination, 391-392 

 Chemical relationships of plants and 



animals, 57-59 

 Chemistry, food making in green 



plants, 261-262 

 Chestnut weevil, 487 

 Chick, 500 

 Child, 365, 381, 431 

 Chimpanzee, 386, 537, 538 

 Chin, development of, 551-552 

 Chiroptera, 115 

 Chitons, 97 

 Chlorine, 277 



Chlorogogen cells, earthworm, 189 

 Chlorophyceae, 69 

 Chlorophyll 



action of in starch making, 258, 262 



and light, 256-258 



chemical composition of, 258, 262 



definition of, 13 



Chloroplasts 



definition of, 129 



effect of light on, 260 



in green leaf, 252, 260 



part played bv in heredity, 465 



structure of, 257-258 

 Choanoflagellate (collared) cells, 281 

 Chordae tendineae, 307, 308 

 Chordata, 103, 105 

 Chordates, 328 

 Chorion, 424, 425 

 Chorionic cavity, 426 

 Choroid, 359 



Chorology, definition of, 26 

 Chromaffin cells, 392 

 Chromosome map, 461, 462 

 Chromosomes, 456-457 



numbers of, 142 

 Chronological age, 388 

 Chyme, 294 

 Ciconiiformes, 113 

 Cilia, 21, 334 

 Circulation, 300-310 



bee, 209-210 



earthworm, 190 

 Circulatory system, closed, 302 

 Circumesophageal connectives, 344 



bee, 211 



earthworm, 194 

 Circumesophageal loop, 344 

 Cirri, 335 



Civilian Conservation Corps, 594, 595 

 Cladocera, 413 

 Clams, 97, 103, 235, 328, 333 

 Classification, 64-117 



animal, 77-117 



evolutionary evidence from, 504 



plants, 69-77 

 Climax formation, definition of, 32 

 Clinostomum marginatum, life cycle of, 



230, 232 

 Clitellum, earthworm, 188 

 Closed fibrovascular bundle, 250 

 Closterium, structure of, 164 

 Clotting, 311 

 Club mosses, 75 

 Cnidoblasts, Hydra, 180 

 Coal, 479 

 Coccus, 165 



Coccyx, evolution of, 543 

 Cochlea, 362 



Cockroach, mouth parts of, 487 

 Cocoa production, annual, 574 

 Codfish, 329 



Coelenterata, 81, 103, 180, 281, 301, 

 320, 343, 499, 531 



colonial, 334 

 Coelom, earthworm, 188 

 Coelomic cavity, 426 



