Note 1170 — Chapter XII · STONE CASTLES OF THE NORMAN PERIOD

King, paper on Canterbury Castle in Archæologia, vi., 298. We have not observed in any English keeps (except in this single instance) any of the elaborate plans to entrap the enemy which M. Viollet le Duc describes in his article on Donjons. He was an imaginative writer, and many of his statements should not be accepted without reserve.