Once upon a time, a certain town grew up at the foot of a mountain range. It was sheltered in the lee of the protecting heights, so that the wind that shuddered at the doors and flung handfuls of sleet against the window panes was a wind whose fury was spent.

High up in the hills, a strange and quiet forest dweller took it upon himself to be the Keeper of the Springs. He patrolled the hills and wherever he found a spring, he cleaned its brown pool of silt and fallen leaves, of mud and mold and took away from the spring all foreign matter, so that the water which bubbled up through the sand ran down clean and cold and pure. It leaped sparkling over rocks and dropped joyously in crystal cascades until, swollen by other streams, it became a river of life to the busy town. Millwheels were whirl…