250 X. A light broke in upon my brain,— It was the carol of a bird; It ceased, and then it came again, The sweetest song ear ever heard, And mine was thankful till my eyes Ran over with the glad surprise, And they that moment could not see I was the mate of misery; But then by dull degrees came back My senses to their wonted track;260 260 I saw the dungeon walls and floor Close slowly round me as before, I saw the glimmer of the sun Creeping as it before had done,[24] [24] But through the crevice where it came That bird was perched, as fond and tame,