INDEX 



ncBvius, Acrocephalus, xxv, 1. 



Nagy nddirigo, xxii, 1. 



Natural selection, Marsh Warbler, xxi, 46, 47. 



, Eeed Warbler, xx, 21, 50. 



Naumann, on arrival of Marsh Warbler in Germany, xxi, 23. 

 Neglect of young, Whitethroat, i, 21. 



Nervous disposition, congenital, Marsh Warbler, xxi, 66 ; Eeed Warbler, 

 xxi, 66. 



organization, Eeed Warbler, xx, 40. 



system, xxi, 15. 



, development of, Marsh Warbler, xxi, 65. 



, highly developed, Blackcap, iv, 15. 



, excited condition of, Garden Warbler, v, 10. 



, inherited, Marsh Warbler, xxi, 63. 



, Marsh Warbler, xxi, 5. 



temperament, highly developed, Chiff-chaff, xii, 25. 



Nervousness at human presence, Chiff-chaff, xii, 21. 



of parents when young are hatched, Whitethroat, i, 17. 



Nest abandoned after death of some of the offspring, W'hitethroat, i, 21. 



building, evolution of, Marsh Warbler, xxi, 49. 



instinct, adaptation of, Marsh Warbler, xxi, 66. 



intermittent activity during, Wood Warbler, xv, 15. 



, Marsh Warbler, xxi, 65, 66. 



, Eeed Warbler, xx, 42. 



method of, Marsh Warbler, xxi, 43. 

 promiscuous, Whitethroat, i, 12. 



built by female only, Chiff-chaff, xii, 16. 



, Eeed Warbler, xx, 45. 



, Willow Warbler, xiv, 23. 



male, Whitethroat, i, 11. 



cleaning of, Sedge Warbler, xxiii, 9. 



, Whitethroat, i, 18. 



commenced two days after arrival, Willow Warbler, xiv, 23. 

 — — - immediately after arrival, Garden Warbler, v, 14. 

 constructed by female only, Garden Warbler, v, 14. 

 , Great Eeed Warbler, xxii, 4. 



by both sexes, Lesser Whitethroat, ii, 7. 



by female, Wood Warbler, xv, 6, 14. 



by male before female arrives, Whitethroat, i, 8. 



construction of , Blackcap, iv, 20. 



, Chiff-chaff, xii, 16. 



, Eeed Warbler, xx, 42, 43, 44, 45. 



, Savi's Warbler, xxvi, 5. 



contamination, Marsh Warbler, xxi, 53. 



depth of, important to the welfare, Marsh Warbler, xxi, 46. 



double, Garden Warbler, v, 15. 



female mainly constructs the, Marsh Warbler, xxi, 42; Eeed 



Warbler, xxi, 42. 

 Grasshopper Warbler, xxv, 19. 

 Great Eeed Warbler, xxii, 3, 4. 



19 



