370 



INDEX 



Colloid, 7 



Colloid substance, 207 



Colon, 187 



Colony, Bee, 123 ; Volvox, 34 



Coloration, protective, 166 



Colorless plants (see Bacteria, Fungi, 

 Mold, Yeast) 



Columella, 217 



Condyles, occipital, 175 



Cones, of eye, 219 



Conjugation, anisogamous, 51 ; isog- 

 amous, 51 ; Paramecium, 45 ; Vor- 

 ticella, 51 



Connective tissues, description, 172- 

 175; laboratory, 319 



Contractile elements, Higher Ani- 

 mals, 17, 48, 49 ; Vorticella, 48, 49 

 (see Muscle tissue) 



Contractile vacuole, Amoeba, 20, 24 ; 

 Euglena, 30 ; Paramecium, 42 ; 

 Volvox, 36 ; Vorticella, 50 



Contraction, muscular, 171 



Conus arteriosus, 195, 197 



Coordination, of animals, 220 ; Earth- 

 worm, 97 ; Frog, 220 ; Hydra, 61 ; 

 Obelia, 71 ; Paramecium, 47 



Coracoid, 180 



Corals, 53 



Cornea, 218 



Corpuscles, blood, 88, 193; tactile, 

 216 



Corti, organ of, 218 



Coxa, 116, 126 



Coxopodite, 100 



Cranial nerves, 211 



Cranium, 175 



Crayfish, description of, 99-112; 

 laboratory, 287-293 ; appendages, 

 100-104; organ systems, 104-112; 

 structure, 99, 100 



Crocodiles, 158 



Crop, Bee, 128 ; Earthworm, 85 



Crura cerebri, 210 



Crustacea, 112 



Cutaneous artery, 195 



Cuticle, 84 



Cyclosis, 16 ; Paramecium, 42 ; Vor- 

 ticella, 50 



Cyclostomata, 154 



Cyst, Euglena, 32 



Cytoplasm, 5 ; Amoeba, 19 (see 

 Ectoplasm, Endoplasm, Proto- 

 plasm) 



Decay, bacteria, 13 



Degeneration, Frog's tail, 230 



Dendrites, 214 



Dental formula, teeth, 178 



Dentary bones, 176 



Dentine, teeth, 178 



Development, Chick, 232-236 ; Chick, 

 laboratory, 363, 365 ; Clam, 147 ; 

 Crayfish, 109; Frog, 222-232; 

 Frog, laboratory, 359, 361 ; Grass- 

 hopper, 122; Honey Bee, 131; 

 Hydra, 65, 66 ; Mammal, 236-238 ; 

 Obelia, 72; Starfish, 79; Verte- 

 brates, 222 (see Reproduction) 



Diabetes, 208 



Diaphragm, 182 



Didinium, 41 



Diencephalon, 209 



Differentiation, 14 ; anteroposterior, 

 82 ; dorsoventral, 82 



Difflugia, 27 



Diffusion, 7, 31 



Digestion, Amoeba, 23 ; Bee, 128 ; 

 Clam, 142 ; Crayfish, 104 ; defined, 

 23 ; Earthworm, 86, 87 ; Frog, 184 ; 

 Hydra, 61, 62 ; intercellular, 56, 61, 

 62, 72; intracellular, 56, 61, 62, 

 72; Paramecium, 43 



Digestive enzymes, 23, 43, 62, 86, 188 



Digestive glands, Crayfish, 104 



Digits, 180, 181 



Dinosaurs, 158 



Diploblastic animal, 66 



Dipnoi, 156 



Disease carriers, Insects, 137 



Diseases, bacterial, 13 



Division of labor, 96 



Dogfish, 155 



Dolichoglossus, 150 



Drone Bee, 123, 124, 131 



Drone-cells, 135 



Duck-bill, 160 



Ductless glands (see Endocrine sys- 

 tem) 



Duodenal vein, 196 



Duodenum, 185, 188 



Dura mater, 211 



E 



Ear, Frog, 165, 216. 217 ; Mammal, 

 218 



