"I thought the giants lived in dense forests," said Billy, disgustedly; "this place is a desert."

"It was a fortunate accident though that brought us to this shore," said a voice behind them and Professor Sandburr's bony, spectacled face was thrust forward. "I would not have missed it for a great deal. I would like to capture a specimen of a Patagonian alive and take him home in a cage. The Patagonian dog-flea, too, I understand, is very curious."

The boys all laughed at this, but the professor was perfectly serious. There is no doubt that he would have liked to have done so and caged up a Patagonian where he could have studied him at his leisure.

The Brutus, with leadsmen stationed in her bows to test the depth of the water, proceeded cautiously up the river and finally came to anchor with her tow behind her about two miles from its mouth. The work of shifting some of the cargo of the Southern Cross to the stern so as to elevate her bow, was begun at once; as time was an important consideration. Soon all was declared ready for the carpenters to start work and they were lowered on stages over the side and at once began to rectify the trouble. Some of them worked from a boat secured to the bow.

"Do you think you can persuade the captain to let us go ashore with you?" asked Frank of the professor, who was busy at once getting out all his paraphernalia in anticipation of going on what Billy called "a bug hunt."

"Certainly," declared the scientist confidently, "come along. I should like above all things to have you boys go ashore with me. Besides, I may teach you all to become faunal naturalists."

The delighted boys followed the old man to Captain Hazzard's cabin, but, to their disappointment, he forbade the expedition peremptorily.

"The Patagonians are dangerous savages," he said, "and I will not assume the responsibility of allowing you to risk your lives."

Nor did any persuasion of which the boys or the professor could make have any effect in causing the commander to change his mind. He was firm as adamant and reluctantly the boys made their way forward and watched the carpenters fix the leak, and when that palled they were compelled to fall back on fishing for an amusement.

The professor joined ardently in this sport despite his disappointment at not being allowed to go ashore. He managed to fix up a net attached to an iron ring with which he scooped up all kinds of queer fish out of the river, many of which were so ugly as to be repulsive to the boys. But the professor seemed to be delighted with them all.