350 



INDEX. 



Notonecta, 188, 190. 

 Nut, 43. 

 Nymph, 169. 



Oak, 26, 261. 



Oat, 234. 



Onion, 25. 



Orchidaceae, 199. 



Orchis, 25. 



Orders of insects, 166. 



Orthoptera, 169. 



Osmundia, 273. 



Otter, 69. 



Outdoor studies, 6, 7, 35, 40. 



Owl, 107. 



Oyster, 147. 



Palisade cells, 221. 



Papilionaceous flowers, 228. 



Passage, birds of, 111. 



Patella, 149. 



Pea, 228, 244, 246. 



Pecten, 147. 



Perianth, 201, 235, 236. 



Pericarp, 243. 



Petals, 28, 226. 



Phrynin, 85. 



Phyllotreta, 298. 



Physical conditions of life, 183. 



Picea, 268. 



Pirns, 305. 



Pine, 26, 236, 240. 



Pisces, 180. 



Planorbis, 149. 



Plant lice, 171. 



Plantain, 231. 



Platyptera, 181. 



Plecoptera, 181. 



Plumage of birds, 96. 



Poetry, nature, 20. 



Pollen, 226, 235. 



Polydesmus, 301. 



Pond skaters, 191, 330. 



snails, 191. 

 Poplar, 235, 260. 

 Poppy, 245. 

 Potato, 26. 

 Potentilla, 203, 204. 



Preen gland, 108. 

 Primrose, 60, 233. 

 Primulaceae, 199. 

 Principles to follow, 17. 

 Privet, 217. 

 Pro-leg, 158. 

 Protandry, 231. 

 Prothallus, 274. 

 Protogyny, 231. 

 Ptarmigan, 193. 

 Public parks, 53. 

 Pupa, 159. 



Quartz, 65, 282. 



Queen of the Meadow, 28. 



Race interest, 31. 

 Ranunculaceae, 197. 

 Ranunculus, 206, 212, 242. 

 Razor shell, 147. 

 Rearing of insects, 21, 31. 

 Recognition of plants, 18, 24, 28. 

 Resident birds, 111. 

 Respiration, 82, 87, 108, 151, 



180, 186. 

 Rhizoid, 274. 

 Rhizome, 44. 

 Ringing of birds, 112. 

 Rook, 113. 

 Root, as food, 20. 



function of, 18, 207. 

 Rosaceae, 198. 

 Rose, 223. 

 Rotifers, 194. 

 Rowan, 26, 224, 262. 

 Running water, 47. 

 Rural Course, 50. 



Salmon, leaping, 71. 



migrations, 75. 



rearing, 332. 

 Salt crystals, 66. 

 Sand, 286. 

 Sandstone, 65, 287. 

 Sawflies, 168. 

 Saxifragaceae, 199. 

 Scales, butterfly, 162. 

 School garden, 54, 288. 



