The vast hosts which the Caledonians were able to muster rendered all these precautions necessary; and it was, moreover, becoming in the Romans—a generation of warriors the mightiest the world has ever seen—to plant the foot firmly on any land they thought fit to occupy. Assuredly they did so in the Lower Isthmus of Britain.

Written Rock, at Fallow-field.


The Roman Barrier of the

Lower Isthmus.

PART III.
LOCAL DESCRIPTION OF THE WORKS.