That's just a small event at the end of the story, after Frank has killed about a hundred Bedouin. The numbers are exact, but he lays into a band of them with his pneumatic cannon, and it's limbs and noggins everywhere.

Highlights of the story: Barney drives "The Cycle" into quicksand again - you know, that fearsome desert quicksand - and the vessel is lost when Frank puts it on a cargo ship, which sinks.