Note 1180 — Chapter XII · STONE CASTLES OF THE NORMAN PERIOD
Reading edition
“Fenestris arcubalistaribus,” Bouquet xvii., 75. The writer has never found a single defensive loophole in any of the keeps of Henry I. or Henry II. Köhler remarks that the loopholes up to this period do not seem to be intended for shooting (Entwickelung des Kriegswesen, iii., 409), and Clark has some similar observations.