CXXXVIII. The seal is set.--Now welcome, thou dread Power Nameless, yet thus omnipotent, which here Walk'st in the shadow of the midnight hour With a deep awe, yet all distinct from fear: Thy haunts are ever where the dead walls rear Their ivy mantles, and the solemn scene Derives from thee a sense so deep and clear That we become a part of what has been, And grow unto the spot, all-seeing but unseen.