Agricola was a man of humanity and virtue: he pitied the condition and respected the prejudices of the conquered.

This behavior facilitated the progress of his arms, insomuch that in less than two campaigns all the British nations comprehended in what we now call England yielded themselves to the Roman government, as soon as they found that peace was no longer to be considered as a dubious blessing.

Agricola carefully secured the obedience of the conquered people by building forts and stations in the most important and commanding places.

Having taken these precautions for securing his rear, he advanced northwards, and, penetrating into Caledonia as far as the river Tay, he there built a _praetentura_, or line of forts, between the two friths, which are in that place no more than twenty miles asunder.

The enemy, says Tacitus, was removed as it were into another island.