MARCH] Price Is. [1877. 



TRANSACTIONS 



OF THE 



WATFORD 



NATURAL HISTORY SOCIETY 

 HERTFORDSHIRE FIELD CLUB. 



EDITED BY THE HOXORARY .?ECBETARY. 



VOL. I. PART 6. 



CONTEXTS : PACK 



20. The HertforcMiii-e Bouriie. By the Pre.sident, John Evans, F.R.S., V.P.S.A., 



F.G.S., etc 137 



21. The Hertfordshire Ordnance Bench Marks. By John Hopkinson, F.L.S., 



F.G.S., .ffo«. -S^c 141 



22. The Polarisation of Light. By James U. Harford. (Plate 11.) 152 



Proceedings, pages xxxiii — xl. 



LOXDOX : 



HARDWICKE AXD BOGrE, 102, PICCADILLY, W. 



WATFORD : I HERTFORD : 



PUBLIC LIBRARY, QUEEN'.S ROAD. I STEPHEN AUSTIN AND SONS. 



