INDEX 



371 



Earthworm, description of, 81-98 ; 

 laboratory, 279-285; organ sys- 

 tems, 84-97 ; structure, 82-84 



Echidna, 160 



Ectoderm, Chick, 234 ; Earthworm, 

 81, 84; Frog, 224, 225, 228; 

 Hydra, 58, 60; Obelia, 69, 70 



Ectoplasm, 5 ; Amoeba, 19, 23 ; 

 Euglena, 29, 30; Paramecium, 

 40, 42; Volvox, 36; Vorticella, 

 48,49 



Edentata, 161 



Efferent nerves, 213 



Egestion, 24, 43, 50, 62, 79, 87; vs. 

 excretion, 24 



Egg case, 94 



Eggs, Bee, 131; Clam, 147; Cray- 

 fish, 109 ; Earthworm, 93 ; Frog, 



205, 222 ; Grasshopper, 122 ; Hen, 

 232; Hydra, 64, 65; Mammal, 

 237; Starfish, 79; Volvox, 37 



Elasmobranchii, 155 



Elastic tissue, 173 



Elodea, 16, 41 ; description, 12 ; 

 laboratory, 251 



Embryo, Clam, 147; Crayfish, 109, 

 110 (see Development) 



Embryology, laboratory, 353-365 



Endocrine system, Frog, 206 ; adre- 

 nals, 207 ; pituitary, 207 ; thyroid, 



206, 230 



Endoderm, Chick, 234; Earthworm, 

 81, 84; Frog, 225, 228; Hydra, 

 58, 61 ; Obelia, 69, 71 



Endolymph, 217 



Endomixis, 25, 44 



Endomysium, 170 



Endoplasm, 5 ; Amoeba, 19, 23 ; 

 Euglena, 30 ; Paramecium, 40, 42 ; 

 Volvox, 36 ; Vorticella, 48-50 



Endopodite, 100 



Endoskeletal structures, 172 



Endoskeleton, 153 



Energy, life, 8 



Entamoeba histolytica, 27 



Enteric cavity, Frog, 225 ; Hydra, 

 58, 61 ; Obelia, 69 



Enzymes, Amoeba, 23 ; Bacteria, 13 ; 

 Bee, 128; Crayfish, 104; Earth- 

 worm, 86; Frogs, 188; Grass- 

 hopper, 118 ; Starfish, 76 ; Yeast, 13 



Epidermis, Earthworm, 84, 85 ; Frog, 

 skin, 4 (see Epithelium) 



Epipharynx, 124 



Epipodite, 100 



Epistome, 48 



Epithelial tissues, 167-169 ; labora- 

 tory, 315 



Epithelium, coelomic, 85 ; germinal, 

 205 ; Hydra, 60 ; lining, 86 ; olfac- 

 tory, 206 (see Epidermis) 



Equilibration, Crayfish, 111 ; Frog, 

 218 



Erepsin, 188 



Esophagus (see Oesophagus) 



Euglena, 35 ; description of, 29-33 ; 

 laboratory, 259 ; life processes, 

 31, 32; structure, 29, 30 



Euspongia, 53 



Eustachian tube, 185, 217 



Eutheria, 160 



Excretion, Amoeba, 24 ; Bee, 130 ; 

 Clam, 145 ; Crayfish, 108 ; Earth- 

 worm, 86 ; Euglena, 31 ; Frog, 

 199, 201, 232; Grantia, 56; 

 Grasshopper, 120 ; Hydra, 63 ; 

 Mammalian embryo, 238 ; Para- 

 mecium, 43 ; vs. egestion, 24 ; 

 Starfish, 78 ; Vorticella, 50 



Exoccipital bones, 175 



Exopodite, 100 



Exoskeleton, Bee, 124 ; Crayfish, 

 99; Grasshopper, 114; Turtle, 

 158 ; Vertebrates, 153, 172 



Eye, Bee, 124; Crayfish, 100, 111, 

 112; Frog, 165, 218 ; Grasshopper, 

 114; laboratory, 351 



Eye spot, Euglena, 30; Starfish, 79 



Eyebrush, 126 



Family, 27 



Fasciculi, 170 



Fats, 9, 10, 188, 189, 198 



Fat body, 119, 184, 204, 205 



Fatty tissue, 173 



Feathers, 159, 172 



Femoral veins, 195 



Femur, Bee, 126 ; Frog, 180 ; Grass- 

 hopper, 116 



Fermentation, alcoholic, 13 



Ferments (see Enzymes) 



Fertilization, Ascaris, laboratory, 

 357 ; Bee, 131 ; Clam, 147 ; Cray- 

 fish, 109; Earthworm, 94; Frog, 

 222; Grasshopper, 121; Hen, 233; 



