58 On Deneholes. exceptional. We are fortunate in this part of England in the great breadth of chalk at or near the surface, which has peculiarly favoured not only their construction, but their preservation, for the information of ourselves in this present age. Nott on Plate II.—The shaft "No. 4," shown on the Map of Hangman's Wood, has not been yet described (Oct., 1882). It is numbered in order to show which pits have already been visited, the three shafts, Nos. 1, 2, and 4, being very close together.