100 
INDEX 
Cell wall, 19 
Centrosome, 20 
Cephalothorax, 64 
Characteristics, 56; acquired, 56; in¬ 
herited, 56 
Check, 42 
Chest, 55; cavity, 50, 56; wall, 50 
Chloride of lime, 44, 48 
Chlorine, 48 
Chlorophyll, 27, 30, 31 
Chloroplast, 29 
Chromatin, 19 
Chromosome, 20 
Cilia, 59 
Cinquefoil, 26 
Circulation, 52 
Circulatory system, 52, 62, 65, 68 
Claws, 84 
Clitellum, 61 
^‘Cluster cup,” 34 
Cob, 2 
Cocklebur, 7 
Cocoon, 61 
Coelom, 62 
‘‘Colds,” 37, 38, 39 
Collar bone, 50 
Colon, 51; ascending, 51; descend¬ 
ing, 51; transverse, 51 
Compound eyes, 67, 72 
Conference, 6, 48 
Control, 42, 43, 44 
Cord, vocal, 51 
Core, 7 
Corn, 1, 10; kernel, 9, 13 
Corolla, 3, 7 
Cortex, 24 
Cotyledon, 9, 10, 11 
Coxa, 67 
Crayfish, 63, 64, 65, 66 
Crop, 62 
Crustacean, 60 
Culm, 1 
“Cure-all,” 37 
Cuticle, 29 
Cytoplasm, 19 
Dandelion, 86, 87 
Dent, 9 
Development, 69, 70, 71, 88 
Diaphragm, 50, 55, 56 
Dicotyledon, 24 
Diffusion, 20, 21 
Digestive, cavity, 60; system, 52, 
62, 66, 68, 80 
Disease germ, 40 
Disinfectant, 43, 44 
Disk floret, 4 
Dispersal, 8, 9, 88 
Dissemination, 92 
Domestic cat, 75 
Dorsal blood vessel, 61, 62 
Drainage, 18, 48 
Ear, 2, 84 
Eardrum, 79 
Earthworm, 61, 62 
Economic importance, 93, 94 
Ectoderm, 60 
Ectoplasm, 58, 59 
Egg, 61, 73, 81, 89 
Elm, 88 
Embryo, 9, 10 
Endoderm, 60 
Endoplasm, 58, 59 
Endosperm, 10, 11, 14 
English sparrow, 74, 75 
Environment, 56 
Enzyme, 15 
Epidermis, 27, 29 
Epiglottis, 52 
Eradication, 92 
Esophagus, 50, 62, 66, 68, 80 
Excretory system, 63, 68 
Exercise, 53 
Exoskeleton, 64 ,66 
Eyelid, 79, 83, 84 
Eyes, 67, 69, 71, 72, 78, 79, 82, 83, 84 
Eyestalk, 64 
Facets, 67 
Feeling, 64 
Fehling’s solution, 94 
Femur, 67 
Fermentation, 36 
Fibrovascular bundle, 2, 24, 29 
Filament, 3, 31, 78 
