"Take your hands off me, or--" The back of his head striking the deck put a period in the middle of his sentence.

The next moment he was being dragged by the collar to the little hand pump amidships.
"Pump!" roared the lightkeeper.

"Pump! or I'll break your everlastin' neck.

Lively now!" The dazed genius rose to his knees.

"What--" he stammered.