Note 78 — LECTURE IV. (28th October 1881.) THE ARCHITECTURE OF THE BROCHS.

The ideal Broch is composed of a series of galleries like those of the earth-houses, superimposed upon a basement with a ground plan like that of the structure at Bodinar, and connected by a stair. Although the stone forts of Ireland occasionally exhibit chambers within the thickness of their walls and have double stairs placed against the interior face of the wall to give access to the wall-head, they never have galleries superimposed on each other, and stairs in the thickness of the wall.