VI 
CONTENTS. 
PAGE 
14. Anniversary Address.—The Horse. By the President, the 
Bight Honourable the Earl of Clarendon . • .. .. 103 
15. Beport on Phenological Phenomena observed in Hertford¬ 
shire during the years 1889 and 1890. By John 
Hopkinson, E.L.S., E.G.S., E.B.Met.Soc., President .. 114 
16. A Simple Method of taking Phenological Observations. 
By Edward Mawley, E.B.Met.Soc., E.B.H.S.117 
17. Notes on Birds observed in Hertfordshire during the year 
1890 and the early part of 1891. By George Booper, 
E.Z.S.123 
18. Water and Water-supply, with special reference to the 
Supply of London from the Chalk of Hertfordshire. 
By John Hopkinson, E.L.S., E.G.S., E.B.Met.Soc., 
President. (Plate IY.).129 
19. The Application of Photography to Meteorology. By 
Arthur W. Clayden, M.A.,E.G.S.,E.C.S., E.B.Met.Soc. 162 
20. Meteorological Observations taken at The Grange, St. 
Albans, during the year 1890. By John Hopkinson, 
E.L.S., E.G.S., E.B.Met.Soc., President.169 
21. The Percolation of Bain through comparatively Light and 
through comparatively Heavy Soil. By Edward 
Mawley, E.B.Met.Soc., E.B.H.S.175 
22. Beport on the Bainfall in Hertfordshire in 1890. By John 
Hopkinson, E.L.S., E.G.S., E.B.Met.Soc., President . . 179 
23. Climatological Observations taken in Hertfordshire in 
1890. By John Hopkinson .187 
24. Beport on Diseases of Plants in Hertfordshire in 1890. 
By A. T. Brett, M.D.191 
25. Miscellaneous Notes and Observations.—Meteorology ; 
Botany; Zoology.193 
Index, etc.197 
Proceedings, October, 1889, to October, 1891, pp. ix-lxx. 
[To be inserted, in binding, before the ‘ Transactions.’] 
