Production of energy, necessity of Rainfall, regulation of, P. B., 136. foods for, H. B., 45. Raspberry fruits, P. B., Fig. 40. Proper posture, H. B., 153, Figs. 48, Rats and mice destroyed by birds, 49. Propolis, A. B., 40. of crayfish, A. B., 157. composition of, P. B., 14, 15. test for, P. B., 18. use of term, P. B., 13, footnote. digestion of, H. B., 95, 96, 98. Prothallus of fern, P. B., 162, Fig. 83. Proximal, A. B., 6. Pseudopods, A. B., 170, 171. A. B., 87, Fig. 64. Reasons for cooking animal foods, H. B., 52. for cooking vegetables, H. B., 54. of frog, A. B., 111, 113. of man, H. B., 8, 128, Fig. 5. H. B., 207-209. Reflex activities, H. B., 158. of bees, A. B., 43. of grasshoppers, A. B., 31. 45. Repair of living things, P. B., 2. in plants, P. B., 70-96. of amoeba, A. B., Fig. 172. Reproduction, of bird, A. B., 70. of butterfly, A. B., 11. of paramecium, A. B., 169. Reproductive hyphæ of molds, P. B., Reptiles, A. B., 185–187. Runner, P. B., 106. Safeguards of body against disease, Saliva, H. B., 90-92. Salivary glands, H. B., 91. Salmon, A. B., 142-144, Fig. 107. San José scale, A. B., 59, Fig. 43. path through leaves, P. B., 59. path through stem, P. B., 48, 49. Respiration, definition, P. B., 68, 69. Scavengers, birds as, A. B., 87. Rhizoids of ferns, P. B., 163, Fig. Seed dispersal, P. B., 91–94. 83, C. Seed leaves, P. B., 98. Rhizome of fern, P. B., 162, Fig. 82. Seed-producing plants, P. B., 159- Ribs, H. B., 146, Fig. 44. Rind, P. B., 47. Roasting meats, H. B., 54. Robin, A. B., 85, 90, Fig. 71. eggs, A. B., 73. Roe, A. B., 142. 161. Seedlings, comparison of, P. B., 103, 104. Seeds, P. B., 72, 74, 77, 97-105. Root-hairs, P. B., 40, Figs. 11, 12, 13. Segments, A. B., 9. osmosis in, P. B., 44. Root of tooth, H. B., 88, Fig. 30. Roots, aerial, P. B., 102. functions of, P. B., 41-43. primary, P. B., 100. secondary, P. B., 100. structure of, P. B., 39-41. Root-tip, P. B., 40. Root tubercles, P. B., 144, Fig. 72. bacteria in, P. B., Fig. 73. Selection, artificial, P. B., 119. of sight, H. B., 164. Sepals, P. B., 71, 79, 88. Serum with antitoxin, H. B., 35. in fern, P. B., 163. in moss, P. B., 164, 166. Shaft of feather, A. B., 67, Fig. 50. Shoulder blades, H. B., 146, Fig. 44. Sieve tubes, P. B., 50, 62, Fig. 16. ostrich, A. B., Fig. 48. of frog, A. B., 114. of bee, A. B., 36. of bird, A. B., 70, Fig. 53. of crayfish, A. B., 159. of frog, A. B., 114. of grasshopper, A. B., 28. Sperm nucleus, P. B., 77, Figs. 27, 28, Skeleton of leg of man and of os- Spinal cord, H. B., 155. trich, A. B., 68, Fig. 51. Skin, H. B., 139–143. Sleep, importance of, H. B., 129, 151, Sleeping sickness, A. B., 174. Small intestine, H. B., 97. absorption, in, H. B., 100. Smuts, P. B., 152-153, Fig. 77. Snake, A. B., Fig. 135. Soda water, H. B., 66. Soil, P. B., 110-114. air in, P. B., 111. cultivation of, P. B., 113. heat, relation of soil to, P. B., 112. Spiracles, A. B., 26. Spirillum form of bacteria, P. B., Fig. Spirogyra, P. B., 167, Fig. 85. Spore formation in bacteria, P. B., Spore cases, of mold, P. B., 150. of ferns, P. B., 162, Figs. 82, 83. Spreading board, A. B., 2, Fig. 3. Spores, of mold, P. B., 150. of ferns, P. B., 162, Figs. 82, 83. Soil fertility, relation of bacteria to, Spur, P. B., 80. H. B., 20. Soil water, absorption of, P. B., 41. transmission of, P. B., 42, 48, 58. Sorus of fern, P. B., 162, Fig. 82. of crayfish, A. B., 159. of fish, A. B., 137. Squash, cross-pollination, P. B., 86, Squash seedling, P. B., Fig. 45. Starch, composition of, P. B., 13, 15. manufacture by chlorophyll, P. B., manufacture by different kinds of Stegomyia mosquito, A. B., 50, 174; Tadpole, A. B., 116, Fig. 84. H. B., 42. Stems, changes during growth, P. B., 51. structure, P. B., 45-48. Stickers, P. B., 93. Stigma, P. B., 72, 73, 81, 88, Fig. 25. Sting ray, A. B., Fig. 94. Stock, P. B., 105. Stoma, P. B., 58, 60, 61, 62, Figs. 21, Stomach, of bee, A. B., 39, Fig. 28. of frog, A. B., 108, 110, Fig. 80. Style, P. B., 73, 81, 88. Sugars as part of diet, H. B., 62. Sun, as source of energy, P. B., 66. facture, P. B., 22. Supers, A. B., 34, Fig. 23. Tapeworm, A. B., Fig. 129. of bee, A. B., 33. of grasshopper, A. B., 24. effect on body, H. B., 65. of fish, A. B., 128. of frog, A. B., 104. of man, H. B., 85-89. effect on growth of bacteria, H. B., of soil, P. B., 112. relation of, to germination and Tendons, H. B., 3. Tent for consumptives, H. B., 33, Terminal bud, P. B., 53. Throat, H. B., 92, 126, Fig. 39. of bee, A. B., 33. of grasshopper, A. B., 24. Tight clothing, effect on respiration, Tissues, H. B., 3. definition, H. B., 4, 9. Survival of the fittest, P. B., 118- Tokay grape fruit, P. B., 90. 119, Figs. 53, 55. Swarming, A. B., 41, Fig. 30. 25-29, Fig. 11. Sweet potato, P. B., 127, Fig. 60. Swimming birds, A. B., 76, Fig. 57. Tomato fruit, P. B., 90. of bee, A. B., 32, Fig. 25. of frog, A. B., 104, 110, Fig. of man, H. B., 85. Tonsils, H. B., 134, Fig. 27. Topics, order of, H. B., 178-180. Total abstinence and life insurance, Variation among plants, P. B., 114, Treatment, of cuts, H. B., 29. of diphtheria, H. B., 35. Tubercles of lung tissue, H. B., 32, Tufted fruits or seeds, P. B., 92. Turkey, A. B., 78. Turtle, A. B., 185. Tussock moth, A. B., 14, Fig. 11. of fish, A. B., 131. of frog, A. B., 111. of man, H. B., 109, 116, Fig. 37. Ventricle, of fish, A. B., 132, Fig. 100. of man, H. B., 110, Fig. 33. Vinegar, preparation of, P. B., 145. Voluntary muscles, H. B., 151. Von Behring, H. B., 35. Vorticella, A. B., Fig. 117. Typhoid fever due to bacteria, P. B., Wading birds, A. B., 77, Fig. 61. 145; H. B., 36-38. Umbo, A. B., 181. Upper lip, A. B., 23, Fig. 18. Walking sticks, A. B., 31, Fig. 21. of cell, P. B., 28, 29. of ovary, P. B., 72, 73. Use of foods, economy in, H. B., 59. Warbler, A. B., Fig. 72. Uses, of food substances, H. B., 50. of forests, P. B., 132–137. of plants, P. B., 127-132. Uvula, H. B., 92. Vaccination, H. B., 40. Vacuum cleaner, use of, H. B., 26, Fig. 11. Valves, in arteries, H. B., 114. of heart, H. B., 112, Fig. 34. of mussel, A. B., 181. Vane of feather, A. B., 67, Fig. 50. Warm baths, H. B., 141. as a part of diet, H. B., 103. given off from leaves, P. B., 59. osmosis of, P. B., 33. uses of, H. B., 52. Webber, Dr. H. J., P. B., 120-122. |