iv 



INDEX 



Duckbill, A 196. 

 Dust, H 82, 158. 



Ear, of bird, A 151; of frog, A 131; 



of fish, A 112; of man, H 154. 

 Earthworm, A 42. 

 Echinoderms, A 9, 34, 125. 

 Ecology, p 14, H 9. 

 Economic importance of birds, A 167; 



insects, A 93; mollusks, A 105; 



rodents, A 206. 

 Ectoderm, A 26, 87. 

 Ectoplasm, An, 14. 

 Egg, of insect, A 81; of hen, H95,96, 112. 

 Elaters, p 198. 

 Element, viii. 

 Embryo, p 26, 180. 

 Embryo sac, p 180. 

 Enamel, H 98. 

 Endoderm, A 26, 27, 37. 

 Endodermis, P 44. 

 Endoplasm, An, 14. 

 Endosperm, p 21, 24. 

 Energy, H 96, 140; in ameba, A 12; 



organic, A 2, 3 ; plant, A 2, 3, 5. 

 Entomophilous, p 148. 

 Environment, P 6, A 148, H 2, 3, 4, 48. 

 Enzyme, H 100. 

 Epicotyl, P 23, 25. 

 Epidermis, of leaf, p 86, 87; of man, 



H 17; of mussel, A 98. 

 Epigeal, p 23. 

 Epiphyte, p 35, no. 

 Epithelial, H 12, 54. 

 Equisetums, p 201. 

 Erect posture, H 3. 

 Esophagus, H 74, 101. 

 Essays, subjects for, H 15, 25, 50, 116. 

 Essential organs, P 135. 

 Ethiopian, H 12, 18. 

 Evaporation, viii. 

 Excretion, A 12. 

 Excurrent, P 51. 

 Exercise, H 45, 48, 49, 57, 67. 

 Expiration, H 79. 

 Explosive seeds, P 172. 

 Eye, H 149; of bird, A 150; of frog, 



A 30; of grasshopper, A 67, 79; 



of fish, A in. 



Fainting, H 57. 

 Family, A 8. 



Fangs, venomous, A 145. 

 Farmers' bulletins, A 95. 

 Fatigue, of muscles, H 45; of nerves, 

 H 130, 131, 136. 



Fats, test for, xi. 



Fatty tissue, H 12, 103. 



Feather, A 155. 



Fehling's solution, xi. 



Ferment, H 100, 103, 104, 158. 



Fermentation, p 190, H 158. 



Fern, p 176. 



Fertilization, p 144; cross, p 144, 146, 

 A 85; self, P 145, 147, 188. 



Fiber, H 2. 



Fibrin, H 61. 



Fibro- vascular bundles, p 61, 90. 



Field study, p 3, 6, 8, 14, 19, 27, 46, 

 57, 71, 84, 91, 101, no, 118, 128, 

 132, 143, 152, 162, 170, 174, 181, 

 A 10, 22, 42, 71, 72, 97, 127, 165, 

 166, 167, 184. 



Filament, p 135. 



Filter, H 163. 



Fins, A no, 113. 



Flagellum, A 21, 27. 



Flatworm, A 49. 



Flavors, H 142, 147. 



Flea, A 92, 93. 



Flight, of bird, A 157, 175; of moth, 

 A 84. 



Floral envelopes, p 133. 



Florets, p 140. 



Flower, p 133, 186, A 85; apetalous, 

 P 136; clusters, P 155; complete, 

 p 136; diclinous, P 137; double, 

 P 142; imperfect, p 137; incom- 

 plete, p 136; lateral, p 136; naked, 

 p 136; perfect, p 137} pistillate, 

 p 137; regular, p 138; staminate, 

 p 137; sterile, P 137; solitary, p 156; 

 terminal, P 156. 



Fly, horse, A 81 ; house, A 92, 93. 



Foliage, p 16. 



Follicle, P 165. 



Food, H 88; defined, H 114; of birds, 

 A 177. 



Food stuffs, H 91. 



Food tube, of bird, A 163 ; of fish, A 1 16 ; 

 of insect, A 76; of man, H 97; 

 of mussel, A 102. 



Foot, H 29. 



Foraminifera, A 15, 18. 



Forestry, p 68. 



Formaldehyde, H 163. 



Formalin, H 93. 



Framework of plant, P 15. 



Frog, A 128. 



Frond, p 176, 178, 181. 



Fruit, P 163, H 95. 



Fucus, P 1 86. 



