A Connecticut Yankee in King Arthurs Court by Mark Twain Chapter 23 Page 8

We took possession of the well and its surroundings. My boys were experts in all sorts of things, from the stoning up of a well to the constructing of a mathematical instrument. An hour before sunrise we had that leak mended in ship-shape fashion, and the water began to rise. Then we stowed our fireworks in the chapel, locked up the place, and went home to bed.

Before the noon mass was over, we were at the well again; for there was a deal to do yet, and I was determined to spring the miracle before midnight, for business reasons: for whereas a miracle worked for the Church on a week-day is worth a good deal, it is worth six times as much if you get it in on a Sunday.

In nine hours the water had risen to its customary level — that is to say, it was within twenty-three feet of the