INDEX 



Vll 



Mycelium, P 107, 108, 188. 

 Mychorrhiza, P 108. 



Nails, H iq. 



Narcotic, h 137, 14S. 



Nasal tone, h 144. 



Natural selection, P 8, A 148. 



Nautilus, chambered, A 107. 



Nectar, A 8, P 148. 



Nephridium, A 45. 



Nerve, H 119; spinal, H 127; cranial, 



H 127. 

 Nerve cell, H 119; fatigue of, H 130. 

 Nerve center, H 117, 120. 

 Nerve fiber, H 119. 

 Nerve tissue, H 11. 

 Nerves, vasomotor, H 23. 

 Nervous children, H 135. 

 Nervous system, of bee, A 78; of man, 



±7 117; of mussel, a 102. 

 Nest building, A 166, 182. 

 Neuron, H 118. 

 Neuroptera, A 82. 

 Neutral substances, ix. 

 Nitella. p 187. 



Nitric acid test for proteid, xi. 

 Nitrogen, viii, p 39, 40, h 81. 

 Nitrogenous compounds, xi. 

 Nodes, p 20, 52. 

 Nodules, p 39, 40. 

 Nose bleed, h 52. 

 Nostoc, p 184. 



Nostril, of bird, A 151; of fish, A 112. 

 Notebooks, P 3. 

 Nucleolus, A 6, h 6. 

 Nucleoplasm, H 7. 

 Nucleus, p 144, 185, a 6, 11, 14, 



H 6, 18. 

 Nutrients, H 91. 

 Nuts, p 164, h 95. 



Octopus, a 106. 

 Oil gland, H 20. 

 Oils, test for, xi. 

 Okapi, A 214. 

 Oleander, p 86. 

 Omnivorous, A 47, Em. 

 One-celled animals, A 7. 

 Oogonia, p 186. 

 Opossum, a 197; H 4. 

 Opsonin, h 162. 

 Optic nerve, h 151, 152. 

 Oral surface, A 35. 

 Orang, A 227. 

 Orbit, H 149. 

 Orchid, p 35, no. 



Order, A 9. 



Organ, A 1, H 9. 



Organic, xiv, A 1. 



Organism, A 1. 



Orthoptera, A 82. 



Oscillatoria, p 184. 



Osculum, A 18. 



Osier, Dr. William, quoted, H 133. 



Osmosis, P 42, 48. 



Outdoor life, H 5, 22. 



Ovary, p 135, 144. 163, 170, A 25 



37. "7- 



Overgrowth, P 12. 



Oviduct, A 46. 



Ovule, P 144, 186. 



Oxidation, xii, A 3, 4, 5, H 14, 90, 



91, 120. 

 Oxygen, viii, a 4, 5, h 4, 76, 81, 140. 

 Oyster, A 104. 



Palisade cells, P 86. 



Palmate, p 74. 



Pancreas, H 104. 



Panicle, P 158. 



Papilla, H 17. 



Pappus, P 141. 



Parameciurn^^&^i^y 



Parasites, p 107, a 49, 93. 



Parenchyma, P 6o, 86. 



Partridge, a 178. 



Pearls, a 105. 



Peccary, A 217. 



Pedicel, P 162. 



Peduncle, P 62. 



Peltate, P 77. 



Pelvis, H 33. 



Pepsin, H 103. 



Perch, A 109, no, 123. 



Perennial, P 17. 



Pericarp, p 164, 165, 169. 



Peristalsis, H 102, 106, 127. 



Peritoneum, H 106. 



Pests, insect, A 93. 



Petals, P 134. 



Petiole, p 76 



Phagocyte, H 161. 



Pharynx, H 73, 85, 10 1. 



Pheasant, A 174. 



Phenogam, p 177, 180. 



Phosphorus, vi. 



Photo-synthesis, P 94, 10 1. 



Phyllotaxy, P 84. 



Physics, xiv. 



Physiology, H 9. 



Pigment, H 18. 



Pine cone, p 27, 170. 



