The lightning had set fire to the heap of dry weed. In a few minutes the flames had spread to the mass of sea-weeds collected at the base of the cliff. It burned up like straw, crackling in the breeze, eddying about like will-of-the-wisps, and spreading an acrid smoke over the whole beach.

Fortunately, the entrance to the cave was clear, and the fire could not reach it.

“That’s our reserve burning!” John Block exclaimed.

“Can’t we save any of it?” said Fritz.

“I fear not!” Captain Gould replied.

The flames spread so rapidly that it was impossible to remove to safety the heaps which furnished the only fuel the shipwrecked people had.

True, the quantity deposited by the sea was inexhaustible. The stuff would continue to be thrown up, but it would take a long time for such a quantity to accumulate. The incoming tide deposited a few armfuls twice in every twenty-four hours. What had lain on the beach was the harvest of many years. And who could say that, in the few weeks remaining before the rainy season, the tide would have thrown up enough for the winter’s need?

In less than a quarter of an hour the line of fire had ringed the whole circle of the shore, and except for a few heaps along the promontory there was nothing left.

This fresh hammer-blow of evil fortune aggravated the situation, already so disturbing.

“Upon my word, it’s no go!”