“A tramp,” he remarked, as he failed to note any signs indicating that she was a liner. “One of the vessels, no doubt, that got our wireless message a little while ago. Not that it matters so much in broad daylight, as she can see the berg for herself.”

They watched the vessel with the interest that always attaches itself to anything that lifts itself above the horizon on the great wastes of the sea.

“Her course seems to be bringing her pretty close to the iceberg,” remarked Bob, with a sudden quickening of interest.

“So it is!” exclaimed the captain, an anxious pucker showing itself in his brow. “What can the captain be thinking of?”

He left them abruptly and hurried away to the wireless room.

On came the ship, perilously close, the boys thought, to the iceberg, which, however, stood clearly revealed in the splendor of the sun.

The next moment a cry of horror broke from the boys.

The vessel they had been watching was being lifted slowly up into the air!

CHAPTER XXI
BY A HAIR’S-BREADTH

The shouts of the Radio Boys were echoed by cries from other throats, for several of the officers and many of the crew of the Meteor had been watching the oncoming steamer.