2l6 



Heron, 72. 

 Homing, 133, 203. 

 Horse, 148. 

 Hover-fly, 88. 

 Humble bee, 1 84. 

 Humming-bird, 88. 

 Humming-bird moth, 87. 

 Hybrids, 142. 



Ichneumons, 14, 22. 

 Insect-flight, 86. 

 Instrumental music, 94. 



Jack-snipe, 93. 



" Jock Scott," 158, 161. 



INDEX 



K 



Kelt, 170. 



Laggards, iii. 

 Leaders, loi, 102. 

 Life-principle, 25. 

 Lighthouse, 193. 

 Long-tailed tit, 44. 



M 



Magpie, 47. 



Magnetic compass, 190. 

 Melitsea aurinia, 37. 

 Mind-blending, 26, 28. 



Ovipositor, 20, 22. 

 Oxygen, 163. 



Panic, 115. 

 Parthenogenesis, 19. 



Partridges, no, 84. 

 Pensile nests, 45. 

 Pheasants, 206. 

 Pied-flycatcher, 56. 

 Pigeons, racing, 126. 

 Pigeons, homing, 126. 

 Pigeons, training, 131. 

 Polygamous birds, 207. 

 Prawn, 172. 

 Prismatic mirror, 153. 

 Processionary caterpillars, 29. 

 Protections, 99. 

 Puss-moth, 14. 



Quail, no. 

 Queen bee, 176. 



Rhyssa persuasoria, 20. 

 Robin, 123. 

 Rooks, 108. 



Sand-grouse, 198. 

 Salmon, 155. 

 Salmon flies, 157. 

 Saw-flies, 38, 

 Sheep, 113. 

 Silken thread, 36. 

 Sirex, 21. 

 Skylarks, 153. 

 Smolt, 139. 

 Snipe, bleating, 95. 

 Sounds, 92. 

 Sounding-board, 95. 

 Souls of animals, 25. 

 Spider's web, 33. 

 Stampede, 115. 

 Swallows, migration of, 195. 

 Swans, 65, 69. 



TelEesthesia, 133, 187, 197. 

 Telepathy, i, 29, 69, 178. 



