VI 
CONTENTS. 
PAGE 
15. On Instinct. By F. Maule Campbell, F.L.S., F.Z.S. .. 119 
16. The Origin and Composition of Chalk and Flint, with 
special reference to their Foraminifera and other 
Minute Organisms. By Professor T. Bupert Jones, 
F.B.S., F.G.S.. .. ..143 
17. Anniversary Address. By the President, the Bight 
Honourable the Earl Cowper, K.G.157 
18. List of Works on the Geology of Hertfordshire, 1874-83. 
By John Hopkinson, F.L.S., F.G.S., etc.165 
19. Some Hertfordshire "Well-sections. By William Whitaker, 
B.A., F.G.S., Assoc. Inst. C.E.173 
20. Meteorological Observations taken at Wansford House, 
Watford, during the year 1883. By John Hopkinson, 
F.L.S., F.G.S., F.B.Met.Soc. .. ..181 
21. Beport on Phenological Phenomena observed in Hertford¬ 
shire during the year 1883. By John Hopkinson, 
F.L.S., F.G.S.191 
22. Diatoms : their Nature and Habits. By Francis Bansom. 197 
23. Notes on Birds observed in Hertfordshire during the year 
1884. By John E. Littleboy .207 
24. Meteorological Observations taken at Wansford House, 
Watford, during the year 1884. By John Hopkinson, 
F.L.S., F.G.S., F.B.Met.Soc.219 
25. Beport on Phenological Phenomena observed in Hertford¬ 
shire during the year 1884. By John Hopkinson, 
F.L.S., F.G.S.227 
26. Beport on Insects observed in Hertfordshire during the 
year 1884. By F. W. Silvester, F.B.Met.Soc.233 
27. Miscellaneous Notes and Observations .236 
28. Meteorological Observations taken at Throcking, Herts, 
during the year 1884. By the Bev. C. W. Harvey, 
M.A., F.B.Met.Soc.239 
29. Beport on the Bainfall in Hertfordshire in 1884. By the 
Bev. C. W. Harvey, M.A., F.B.Met.Soc.247 
30. The Nests and Eggs of Birds. By Henry Seebohm, 
F.L.S., F.Z.S.255 
31. List of Lepidoptera observed in the Neighbourhood of 
Hitchin and at Knebworth, Herts. By John Hartley 
Durrant, F.E.S.261 
Index. 267 
Proceedings, November, 1883, to October, 1885, pp. ix-lxxii. 
[To be inserted, in binding, before the ‘ Transactions.’] 
