"Unless we've been rowing in a circle."
"I say risk it."
"All right, then, here goes. On board the Valkyrie."
Bob gave the call several times, each time a little louder until, at the last, he was shouting with about all his lung power. But there was no answer.
"Gee, we must be half way back to the United States if they didn't hear that last one," Jack declared.
"Or to Australia," Bob added.
"Well, I guess about the only thing to do is to do nothing till this fog lets up."
"I reckon so. There's no use in getting any farther away and I guess we're safe enough here."
An hour passed and there was no diminution in the density of the fog. Save for a gentle swell the sea was perfectly calm.
"We aren't going anywhere very fast," Bob laughed after a long period of silence.