Pilgrims' Gap, [xviii], [139], [141].

Plane-trees Farm, [72].

Poltross Burn, [159], [160].

Pomponia Græcina, [8].

PONS AELII (Newcastle), [29], [42].

Port Carlisle, [181], [209], [215], [216].

Portgate, [64].

Powburgh Beck, [vii], [205].

Principia or Headquarters buildings, [88], [89], [91], [119], [166].

PROCOLITIA (Carrawburgh), [29], [106].