APUD CORSTOPITUM
APUD CORSTOPITUM
(per lineam murus.)
L. Sentius Castus—at one time an officer in the 'Domestici,' or Emperor's Guards—had volunteered for active service, and was now a 'Vexillarius,' or Standard Bearer to the first squadron of horse attached to the Sixth Legion—'the Victorious and Faithful,' that had come over to Britain with the Emperor Hadrian. He was sitting one August afternoon by the fountain in the Forum of Corstopitum, engaged upon improving a system of fire signals for use on the great wall, which Hadrian was building from the Tyne estuary to the Solway Firth.