From the centre of the vault rose a great chimney, and under the chimney was a huge fire, and on the fire stood a mighty golden cauldron, up to which, through a large pipe, came the water of the well, and went pouring in with a great rushing, and hissing, and bubbling.

From the other side of the cauldron, the water rushed away through another pipe into the trough that ran through all the chambers, and made the rivers that flowed the beds of the sleeping patients.

And what was most wonderful of all--by the fire stood two angels, with grand lovely wings, and they made a great fanning with their wings, and so blew the fire up loud and strong about the golden cauldron.

And when Willie looked into their faces, he saw that one of them was his father, and the other Mr Shepherd.

And he gave a great cry of delight, and woke weeping..