“Well, that does beat the Dutch,” declared Tom, “Now I’m going to test our sets. Perhaps everything’s hoodooed. You go to the radio compass, Frank, and Mr. Bancroft can stay here and I’ll go to our sets and we’ll try to get some sound or to send. If they’re all dead, it must be some atmospheric trouble. Perhaps the air’s full of electricity or something.”

“Whew!” exclaimed Bancroft, “That gives me an idea! Perhaps it’s due to that volcano over at Martinique--Mt. Pelee you know, the one that destroyed St. Pierre. It’s still active and it’s only a few miles from Dominica. If I could only get some dope from the station at Fort de France I could find out.”

“I don’t know,” replied Tom. “I read somewhere that active volcanoes did all sorts of queer things to ships’ compasses and if they affect magnets, I don’t see why they shouldn’t affect radio instruments. But if that’s it, then it’s mighty funny you got the message this morning.”

“But I didn’t!” exclaimed Bancroft. “I haven’t received any message since day before yesterday. That message your father got was a cable.”

“Gosh!” ejaculated Tom. “I thought all along it was a radio. I never asked, but just took it for granted. Then you don’t know how long these sets have been out of order?”

“Well, I know they were all right when we sent those messages off after we picked up the Devonshire’s boat,” replied Bancroft.

“Then perhaps it’s the volcano,” said Tom. “If it is, the sets will work all right after we get farther away.”

“And we’ve forgotten something else,” put in Frank. “How can we tell whether it’s the sending or receiving sets that have gone bad? Maybe they all send and won’t receive or all receive and won’t send.”

“Why, of course that’s so,” assented Tom. “If it’s the same trouble with all--the volcano or atmosphere or anything, then we may all be sending but can’t receive. But you’re wrong, in a way, because we know it must be in the receiving end anyway, or we’d hear some messages from ships or shore even if they didn’t get ours. So if we’re not sending, the things have gone wrong both ways. Well, I’m going to ours now, so listen.”

It was now night, a dark, inky black night such as only occurs in the tropics, with the darkness seeming to shut one in by a curtain and Tom had actually to feel his way along the decks. The sea was fairly smooth, and the destroyer, steadied by her swift rush through the water, was making easy weather of it, and by the vibration of her hull Tom knew that she was being driven at the greatest speed possible in her still crippled condition. The decks seemed deserted, although Tom knew that, hidden from view in the blackness, the watch was being kept and once he glimpsed a dim, white, ghostly figure as it passed through the rays of a running light forward and he heard faint voices from the direction of the chart room and bridge. But somehow he had a peculiar feeling of mystery or danger afoot and glanced nervously about. Then, realizing how foolish he was, he shook off the childish fears of the dark and reaching the stairs descended towards the little room where he and Frank had installed their radio outfits.