CONTENTS. VU 



PAGE 



31. Some Experiments on the Physics and Chemistry of the 



Sap of Plants. By Prof. John Attffeld, Ph.D., F.U.S., 

 F.C.S 229 



32. Miscellaneous Notes and Observations 237 



33. Notes on the River Lea below Hertford. By R. B. Ckoft, 



R.N., F.L.S., etc. (With a Plate.) 243 



34. Report on the Rainfall in Hertfordshire in 1882. By 



the Rev. C. W. Hakvey, M.A., F.M.S 249 



35. Meteorological Observations taken at Throcking, Herts, 



during the year 1882. By the Rev. C. W. Hakvky, 

 M.A., F.M.S 255 



36. The Spiders of the Neighbourhood of Hoddesdon : a Con- 



tribution to the Arachnidal Fauna of Hertfordshire. By 



F. M. Campbell, F.L.S., F.Z.S., F.R.M.S 263 



Index, etc 277 



Peoceedings, October, 1881, to October, 1883, pp. ix-lxviii 



LIST OF PLATES. 



I. Chlorodesmos hispida, Phillips {gen. et sp. nov.) To face p. 94 



II. Map of Herts showing the Superficial Geology ,, 151 



III. Agricultural Map of Hertfordshire ,, 154 



IV. Tulip-tree formerly growing at Waltham Abbey ,, 246 



