But the guest grabbed the penstock while it was still vibrating.
"When Egypt Went Broke"
Holman Day
This is the reason why, when he is sent to the spring for a pitcher of water, he is absent so long; for he stops to poke the frog that sits on the stone, or, if there is a penstock, to put his hand over the spout, and squirt the water a little while.
"McGuffey's Fifth Eclectic Reader"
William Holmes McGuffey