Editorial note — APPENDIX.
Reading edition
The ground of Ely Cathedral is 511⁄2 feet above sea level (Ordnance datum.) Crowland is perhaps 12 or 15 feet (the lowest part of the fens being between Peterboro’ and Wisbech, about 5 feet.) Crowland Abbey was not built upon piles but on solid gravel which runs some way north-east of the structure—the peaty soil lies north-east and south of this. (See “The Fenland past and present,” p. 141.)