The explorers, bearing the canoe with the luggage upon their shoulders, ascended at a steady gait the western bank of the Xingu. The cleared space which they had noticed on both sides of the river, caused by the furious overflow, continued, so that the progress was comparatively easy.

The din of the rapids was so loud that they could not have heard each other, except by shouting at the top of their voices, for which there was no call, since even Bippo and Pedros were now able to read the full meaning of the extraordinary incidents of the night.

Ashman looked around and ascertained that Ziffak was not bearing them company. None of the savages were in sight, though all would have been as eager as tigers to rend the white men to shreds had such permission been given.

The absence of the great leader caused no uneasiness on the part of any one of our friends. Strange indeed, would it have been had they felt any distrust of him after his late interference.

The sun appeared while the party were still pushing forward. The sky was as clear as on the preceding day, and, though the temperature was quite warm, it was not unpleasantly so. Several causes contributed to the delightful coolness which renders the Matto Grosso one of the most attractive regions on the globe. The abundance of water, the endless stretch of forest, with few llanos of any extent, and, above all, the elevation of the plateau produce a moderation of temperature not met with in the lowlands, less than twenty degrees further south.

But the explorers were weary and in need of rest. It will be recalled that they found precious little opportunity for sleep during the preceding night, which marked the close of an unusually hard day's labor. They would have rested could they have done so, and now that the chance seemed to present itself, they wisely decided to wait a few hours before beginning the last stretch of water which lay between them and the villages of the Murhapas.

The halt was made at the top of the rapids, where the boat was carefully replaced in the river, the fracture made by Ziffak's javelin repaired, and everything adjusted for the resumption of their voyage. Then, with only the Professor on guard, the others lay down on their blankets and almost immediately sank into a deep, refreshing slumber.

Professor Grimcke, finding the care of the camp on his hands, took a careful survey of his surroundings, which were quite similar to those that had enclosed him many times before.

On both sides, stretched the almost endless Brazilian forest, within which a traveller might wander for weeks and months without coming upon any openings. In front was the Xingu, smooth, swift, and winding through the wilderness in such form that he could see only a short distance up stream. Looking in the opposite direction, the agitation of the water was noticeable before breaking into rapids, similar, though in a less degree, to the rapids above Niagara Falls. The volume still preserved its remarkable purity and clearness, which enabled him to trace the shelving bottom a long way from where he stood.

Grimcke was somewhat of a philosopher, and always eager to make the best use of the time at his command. There was nothing more to be feared from the Aryks, and his situation, therefore, of guardian of his sleeping friends might be considered a sinecure.