Chemicals, price list of, P. B., 176-| Codfish, A. B., 144-146, Fig. 108. Chittenden's experiments relative to Cold-blooded animals, A. B., 194, Chlorophyll, P. B., 23, 28, 51, 60, Colds, H. B., 135. 62, Fig. 22. Chlorophyll bands, P. B., 167, Fig. 85. Chrysalis of butterfly, A. B., 12, Fig. Cider, P. B., 148. Cilia, in windpipe, H. B., 126, Fig. 18. of paramecium, A. B., 165, 167. of fish, A. B., 131, Fig. 99. of man, H. B., 107–121. Citranges, P. B., 122. Clams, A. B., 185. |Collar bones, H. B., 146. Fig. 44. Colorado potato beetle, A. B., 59, Fig. Comb building of bees, A. B., 37, Fig. Composition of the body, H. B., 44. essential for plant growth, P. B., Classes of vertebrate animals, A. B., Conservation, 190. Classification, of animals, A. B., 190-194. of birds, A. B., 73-80. of invertebrates, A. B., 192–193. of vertebrates, A. B., 194. Clay, P. B., 110. Clothes moth, A. B., 19, Fig. 15. Clotting of blood, H. B., 108. Coal period, forests of, P. B., Fig. 65. Cockroaches, A. B., 31, Fig. 18. Cocoa, P. B., 129, Fig. 63; H. B., 66. Corn production in United States. Cocoon, A. B., 13, Fig. 16. P. B., 119. Corn seedling, P. B., 100. Corn silk, P. B., 88. Corn stalk, P. B., 47, 49, 50. Corn tassels," P. B., 87, Fig. 33. of frog, A. B., 111, 113. Cortex of roots, P. B., 39. Cost of foods, H. B., 56, Fig. 22. Crops, valuable, of New York State, P. B., 122, Fig. 58. Crossing, artificial, of related species, by bumblebees, P. B., 81. in pansy, P. B., 82-84. Cuckoo, A. B., 85, 90, frontispiece. Daily diet, H. B., 60-62. Dairy products of New York State, Dandelion plant, P. B., Fig. 55. Dangers to forests, P. B., 137. Decrease in bird life, A. B., 91. Destruction of birds, A. B., 92–97. effect of, A. B., 96. Diaphragm, H. B., 1, 131, Fig. 1. Dicotyledons, P. B., 160, 170. definition of, P. B., 37. of insoluble salts, H. B., 95. of man, H. B., 84. of crayfish, A. B., 157. of man, H. B., 83. Digestive system, H. B., 82-98, Fig. Diphtheria, due to bacteria, P. B., 145; H. B., 34. Directions for notebooks, H. B., 185– Direct metamorphosis, A. B., 29. prevention of, H. B., 102. safeguards of body against, H. B., 145. Diseases of respiratory organs, H. B., Darwin, Charles, P. B., 82, 118, Fig. Dislocations, H. B., 149. 54. Dispersal of seeds, P. B., 91. Deciduous trees and shrubs, P. B., Distal, A. B., 6. 158. Distillation, P. B., 147. Decomposition, result of action of Distilled liquors, P. B., 148. Distribution of bacteria, H. B., 16. Division of cell, P. B., 30. Drainage, P. B., 111, 114. Drawings, in laboratory, H. B., 181, Drone bee, A. B., 36, Fig. 24. Ducts, P. B., 45, 50, 62, Fig. 14. Ear, of bird, A. B., 65. of man, H. B., 166-167. of birds, A. B., 83-91. of butterflies and moths, A. B., 13- of crustacea, A. B., 162. of fish, A. B., 141-144. of frogs and toads, A. B., 118. of grasshoppers, A. B., 30. of mammals, A. B., 189. of protozoa, A. B., 173. of grasshopper, A. B., 28, Fig. 19. of mosquito, A. B., 43, Figs. 31, 32 Elodea, P. B., 25, 28, Fig. 5. of crayfish, A. B., 159. of hen, A. B., 70, Figs. 52, 54. Endosperm, P. B., 101. use of, P. B., 104. Energy, definition of, P. B., 64. liberation of, A. B., 113, 135, 158; P. B., 66, 67; H. B., 123. transformations of, P. B., 65. 130. Economy, in relation to foods, H. B., Epidermis, 56-60. Eel, A. B., Fig. 96. Effects of bird destruction, A. B., 96. of bee, A. B., 36. of bird, A. B., 70. of butterfly, A. B., 11. of frog, A. B., 114. of grasshopper, A. B., 28. of plants, P. B., 77. Eggs, of bee, A. B., 36. of butterfly, A. B., 11, Fig. 6. of crayfish, A. B., 159. of fish, A. B., 137. of frog, A. B., 114, Fig. 84. of human body, H. B., 139. of leaf, P. B., 56, 61, 62, Figs. 21, 22. of stem, P. B., 51, 62. Equipment of laboratory, H. B., 171– Erosion, as result of destruction of forests, P. B., 137. Essential organs, P. B., 71, 73. Excretion, of amoeba, A. B., 171. of paramecium, A. B., 166, 169. Exercise, importance of, H. B., 102, 120, 129, 133, 151, 160. Existence, struggle for, P. B., 114- Exodus, A. B., 30. Expiration, H. B., 124, 132. of house fly, A. B., 57. in fish, A. B., 139. in grasshopper, A. B., 28. of egg cell in fern, P. B., 163. Fiber-producing plants, P. B., 130- 132. of mosquitoes, A. B., 54, Figs. 38, Fibers, P. B., 47. 39. External ear, H. B., 166. Eye, of bee, A. B., 31. of bird, A. B., 62. of butterfly, A. B., 6. False foot, A. B., 170, 171. Fat, composition of, P. B., 14, 15. in human body, H. B., 44. uses of, H. B., 51. Feathers, A. B., 67, Figs. 49, 50. Feeding of birds, A. B., 99. Fibrous bark, P. B., 46. Field work on birds, A. B., 82. of goldfish, A. B., 126. Fire, lanes, P. B., 139. of food, P. B., 145. relation of bacteria to, H. B., 22. Flax, P. B., 130. Fleshy fruits, P. B., 93, 96. Flies, A. B., 57-59. and typhoid fever, H. B., 37. Floods, prevention of, P. B., 136. Floral envelopes, P. B., 71, 72, 79, 88 Fehling's solution, preparation of, Flowers, P. B., 70–88. P. B., 17. Femur, of bee, A. B., 33. of grasshopper, A. B., 24. digestive, P. B., 38. in fish, A. B., 131. in frog, A. B., 110. in gastric juice, H. B., 94. Ferns, P. B., 161-164, Figs. 82, 83. in bees, A. B., 36. in bird, A. B., 70. in butterfly, A. B., 11. gladiolus, P. B., 72–74. pansy, P. B., 79-82. tulip, P. B., 70-72. Fly-catchers, A. B., 80, Fig. 69. of amoeba, A. B., 171. of butterfly, A. B., 7, 11. of crayfish, A. B., 157. of fish, A. B., 128. of frog, A. B., 104, 110. of hydra, A. B., 177. of mussel, A. B., 182. of paramecium, A. B., 165, 168. manufacture by plants, P. B., 22, Gill chamber, A. B., 155. 24, footnote. Fossil bird, A. B., Fig. 47. Fresh air, importance of, H. B., 33, Frogs, A. B., 101-119. Fronds of ferns, P. B., 161. Frosts, loss of crops due to, P. B., 117. definition of, P. B., 94. stalk, P. B., 91, 92. Fruits, P. B., 89-96. Frying, H. B., 53. Fuel, P. B., 133. Function of organ, H. B., 2. Functions of organs, P. B., 27. Fungi, relation to human welfare, P. B., 139–153. of crayfish, A. B., 153, 158, Fig. 111. of mussel, A. B., 183. of tadpole, A. B., 116. Girls, as protectors of birds, A. B., 99. of intestine, H. B., 97. of skin, H. B., 140. of stomach, H. B., 95. Glass-plate garden, P. B., 102. of frog, A. B., 101. of man, H. B., 125. Goddard, Miss Martha F., P. B., 193. Grafting, P. B., 105-106. Grapes, P. B., 129. Fungous diseases, loss of crops due Grape sugar, to, P. B., 117. Furnace heat, H. B., 138. Gall bladder, H. B., 101, Fig. 2. glass-plate, P. B., 102. Gastric glands, H. B., 93, Fig. 31. composition of, P. B., 14, 15. test for, P. B., 16. Gray matter of nervous system, H. B., Grazing animals, a danger to young |