Then mass begun, but in the midst of it, the priest said out aloud, 'Oh I forgot, and turning round to us began to wag his grey head and white beard, throwing his head right back, and sinking his chin on his breast alternately; and when we saw him do this, we presently began also to knock our heads against the wall, keeping time with him and with each other, till the priest said, 'Peter! it's dragon-time now, whereat the roof flew off, and a great yellow dragon came down on the chapel-floor with a flop, and danced about clumsily, wriggling his fat tail, and saying to a sort of tune, 'O the Devil, the Devil, the Devil, O the Devil, so I went up to him, and put my hand on his breast, meaning to slay him, and so awoke, and found myself standing up with my hand on the breast of an armed knight; the door lay flat on the ground, and under it lay Hector, our dog, whining and dying.