; ' .'*?$/$ 
NOVEMBER.] Price Is. [1887. 
TRANSACTIONS 
OF THE 
HERTFORDSHIRE 
NATUEAL HISTORY SOCIETY 
AND 
FIELD CLUB. 
EDITED BY JOHN HOPKINSON , F.L.S., E.G.S. 
VOL. IV. PART 7. 
CONTENTS ! PAGK 
21. A Naturalist’s Calendar for the Northern Border of Hertfordshire. By II. 
George Fordham, F. G. S.... 193 
22. Observations on Diatomacese from the Neighbourhood of Hertford. By 
Isaac Robinson . 196 
23. Report on Insects observed in Hertfordshire in 1886. By F. W. Silvester, 
F.R.Met.Soc. 201 
24. Meteorological Observations taken at Watford during the year 1877. By John 
Hopkinson, F.L.S., F.G.S., F.R.Met.Soc. 205 
25. Meteorological Observations taken at Throcking, Herts, during the year 1886. 
By the Rev. C. W. Harvey, M.A., F.R.Met.Soc.... 209 
26. Report on the Rainfall in Hertfordshire in 1886. By the Rev. C. W. Harvey. 214 
27. Miscellaneous Notes and Observations. 221 
LONDON: 
GURNEY & JACKSON, Successors to YAN YOORST, PATERNOSTER ROW. 
HERTFORD: 
STEPHEN AUSTIN AND SONS, PRINTERS, FORE STREET. 
1887. 
