testing a new electric airship, which a friend of Mr. Damon's had invented, Tom, the inventor and Mr. Damon were lost on an island in the middle of the ocean. There they found some castaways, among whom were Mr. and Mrs. Nestor, parents of Mary Nestor of Shopton, a girl of whom Tom was quite fond.
Tom Swift, after his arrival home, went on an expedition among a gang of men known as the "Diamond Makers" who were hidden in the Rocky Mountains. He was accompanied by Mr. Barcoe Jenks, one of the castaways of Earthquake Island. They found the diamond makers, and had some surprising adventures, barely excaping with their lives.
This did not daunt Tom, however, and he once more started off on an expedition in his airship the Red Cloud to Alaska, amid the caves of ice. He was searching for a valley of gold, and though he and his friends found it, they came to grief. The Fogers, father and son, tried to steal the gold from them, and, failing in that, incited the Eskimos against our friends. There was a battle, but the forces of nature were even more to be dreaded than the terrible savages.
The ice cave, in which the Red Cloud was stored, collapsed, crushing the gallant craft, and
