INDEX 



207 



coelenterata, 137-141; of echi- 

 nodermata, 147, 149, 150, 

 152; of mollusca, 158, 160; 

 of vermes, 163-165, 171; of 

 arthropoda, 174, 175, 179; of 

 vertebrata, 186, 188 



Diphtheria, 80 



Disease, 79 



Disease germs, 40, 41, 52, 63, 

 64 



Dissepiment, 168 



Division of labor, 30 



Dogs, 188 



Dragon flies, 184 



Drug, 54, 63 



Ducts, 150, 152, 176, 180 



Eating, method of, 11, 152, 



164 

 Ear, 116 

 Earthworm, 49, 68, 102, 112, 



162-170 

 Echinodermata, 147-153 

 Economic value of mollusca, 



159, 160; of vermes, 164; of 

 Crustacea, 176, 178, 179, 180; 

 of insecta, 184 



Ectoderm, 93, 135, 136, 141 



Egg-cell, 91, 92, 96 



Eggs, 145, 152, 169, 180 



Elasticity, 38, 72, 74, 75 



Elephants, 185 



Elements found in protoplasm, 



53 

 Entoderm, 93, 135, 136, 141 

 Enzyme, 19, 55, 56, 57, 64, 78 

 Equilibrium, 25, 26, 27, 28, 29, 



38, 43, 56, 78 

 Evaporation, 14, 15, 22, 83 

 Evolution, 87, 94, 123 

 Excretion, 59, 60, 130 

 Excretory organ, 46, 47, 59, 60, 



160, 169, 174, 176, 179 

 Exercise, 41, 83, 117 

 Expansion, 14, 22 

 Expiration, 38, 39, 72 

 External respiration, 39 

 Eyes of arthropoda, 175, 183; 



of mollusca, 159; of vermes, 

 171; of vertebrata, 111, 116 

 Eyespot, 150 



Faecal matter, 59 



False feet, 176 



Fat, 57, 76 



Fats, 52, 53, 56, 57, 58, 81 



Female, 91 



Fermentation, 64 



Ferments (see Enzyme) 



Fertilization, 89, 91, 96, 133 



Fever, 83 



Fibrin, 80 



Finger, 108, 109 



Fish, 185, 188 



Fission, 89, 132, 143, 171, 190 



Flat worms, 170 



Flower, 96, 97 



Fly, 173, 184 



Food, 11, 12, 21, 45, 46, 116 



Food substances, 51, 53, 75, 76, 



129, 185 

 Foods, 54 



Foot, 108, 155, 157 

 Forearm, 109 

 Fresh air, 44 

 Frog, 188 

 Function, 1, 2 

 Functions, 3, 21 



Ganglia, 116, 159, 169, 173, 180 



Gas, 13, 14, 16, 17, 19, 22, 24, 

 25, 27, 29, 32, 43 



Gastric juice, 56 



Gastrula, 47, 92, 93 



Generations, alternation of, 

 145, 146, 190 



Germ layers (see Primary lay- 

 ers) 



Germs (see Disease germs) 



Gillbailer, 180 



Gills, structure of, 31, 32; of 

 echinodermata, 151; of mol- 

 lusca, 157; of arthropoda, 

 174; of lobsters, 180; of 

 acerata, 181; of vertebrata, 

 186 



Girdle, 163, 170 



Gizzard, 166 



Glands, 50 



Grasshopper, 184 



Green glands, 174, 179 



Growth, 10 



Gullet, 129 



