SEPTEMBER] 
Price Is. 
[ 1890 . 
TRANSACTIONS 
OF THE 
HERTFORDSHIRE 
NATURAL HISTORY SOCIETY 
AND 
FIELD CLUB. 
EDITED BY JOHN HOPKINSON, F.L.S., F.G.S. 
CONTENTS I PAgk 
4. A Record of Water-level in a deep Chalk Well at Odsey Grange, Royston, 
1878-1888. By H. George Fordham, F.G.S. (Plate II.) [Continued from 
Part I.]. 33 
5. On Local Scientific Investigation in connection with Committees of the British 
Association. By John Hopkinson, F.L.S., F.G.S., F.R.Met.Soc. 37 
G. On Geological Photography in Hertfordshire. By John Hopkinson .......... 49 
7. Some Hertfordshire Well-sections.—Second Paper. By W. Whitaker, B.A., 
F.R.S., F.G.S., Assoc.Inst.C.E. 53 
LONDON": 
GURNEY & JACKSON, Successors to YAN YOORST, PATERNOSTER ROW. 
HERTFORD: 
STEPHEN AUSTIN AND SONS, PRINTERS, FORE STREET. 
