"That means a choke in the feed-pipe," he decided, and, selecting a small shifting spanner, proceeded to disconnect the unions.

No paraffin flowed through the pipe. Mostyn glanced at the gauge on the tank. It registered zero. Unaccountably the tank had emptied itself of more than seventy gallons of paraffin during the night.

Further researches discovered the cause, although that could not give back the wasted fuel. The paraffin-pipe was fractured, possibly by the starting-handle when the engine back-fired, and now only about a gallon of petrol was available.

Burgoyne looked grave when Mostyn reported the latest misfortune.

"We've paraffin for the lamps," he remarked. "About ten gallons in a drum in the forepeak. Can you patch up the pipe?"

"If that were all the damage, old thing, it wouldn't much matter," declared Peter. "I can fix that up with insulating tape in a couple of minutes. It's the wasted kerosene that worries me."

"S'pose we couldn't pump it out of the bilges?" asked Burgoyne.

"We'll have to, in case it vaporizes and explodes," replied Mostyn. "Of course, it isn't nearly so dangerous as petrol, but in hot weather——"

"I mean to use it again," interrupted Alwyn.

"'Fraid not," said the temporary engineer. "It's all slushing about in the bilge-water. If the schooner had been bone dry we might have managed it. However, ten gallons is better than none. I'll fix up that pipe at once."