It might have been difficult to convince Ned of this; but he made no further rejoinder. It did seem too bad that, just as success seemed to have crowned Tom Swift’s efforts in the building of a wonderful flying boat, a chance like this news from Iceland happened to postpone the final speed and other trials of the new invention.

Tom did not waste time even in replying to the wireless message. As they could not communicate direct with the plant at Shopton he knew that, barring accidents, the flying boat would make her landing behind the Swift Construction Company stockade before a radiogram could be delivered to his father.

Out of the boisterous sea the great flying boat rose like some huge waterfowl taking to the air. Her compressed air compartments were gradually emptied until she gained a perfect poise in the air, some mile or more above the sea.

Tom guided her in a half circle and she headed for the shore. The seaplane flew directly over the British ship, Cantoria, the captain of which had complained of the danger to ordinary shipping by the nearness of the plane.

“This fact will undoubtedly make the commander of that ship write to the Times when he gets back to London,” chuckled Ned.

The seaplane rose higher as she neared the shore. The yellow streak of Cape Cod was only to be dimly distinguished through the lower windows of the pilot room. Night had fallen when the Winged Arrow spiraled over Shopton and the works. Tom made a ground landing instead of sinking to the surface of Lake Carlopa. He was in a hurry to get home.

The searchlights in the yard of the shops served as lighthouses for the plane’s landing. She came down perfectly, bumping along the ground easily upon the wheels, and finally stopped not far from the highroad.

The Swift house was not far away. Aside from Koku, who had been on watch continually since the plane had flown away, there were few people to greet the crew. Tom and Ned left the mechanicians to attend to the flying boat and hurried up to the house.

Mr. Barton Swift, very much disturbed for him, was walking the library floor. He hurried to greet Tom and Ned, waving a blue cablegram in his hand.

“What is it, father?” Tom asked. “What has happened to Mr. Damon and Mary’s father?”