When beneath its walls, I perceived decay had made progress, even in seven months: many a window showed black gaps deprived of glass; and slates jutted off here and there, beyond the right line of the roof, to be gradually worked off in coming autumn storms.

Here, I perceived decay had made progress, even in seven months: many a window showed black gaps deprived of glass; and slates jutted from the roof, to be gradually worked off in coming autumn storms.
