We were unable to leave until eight o'clock, as the river was dangerous enough when we could see where we were going, and it would have been rather foolish to add one more risk to our travelling in the fog.

My men were extremely irritable and morose that morning, and even our dogs were most troublesome. We had had a great deal of trouble with the dogs; they were as disobedient and untrainable as the men. Nearly every morning we had to waste a considerable time in getting the animals back into the canoe. When we were ready to start they generally dashed away into the forest and the men had to go and fetch them and bring them back. That particular morning one dog—the best we had—escaped, and my men searched for more than an hour, but were unable to find him. In trying to run after him they got their feet full of thorns, and they became so enraged that they decided to abandon the dog on the island. I called him for more than half an hour, trying to save his life, but the animal refused to come. So, much to my sorrow, we had to pull out without him, and undoubtedly the poor beast eventually must have died of starvation, as there was no food whatever to be obtained in the forest on the island.

The dogs were quite amusing to watch while in the canoe, their terror when we shot rapids being quite manifest. They were an additional source of danger to us, for once or twice while shooting rapids strewn with rocks they would jump out of the canoe on to the rocks as we were shaving past them, and we lost much time on several occasions in order to rescue them. In going through the forest the poor animals had suffered much from the attacks of ants and all kinds of insects, many parasites having got inside their ears and where the skin was softer under their legs, causing terrible sores.

They never got fond of anybody, no matter how well they were treated. In fact, unlike all other dogs of any other country, they never seemed even to recognize any of us. Alcides had become the owner of the abandoned dog in a peculiar way at the beginning of our journey, when travelling with my caravan of mules. The dog was going along with a man travelling in the opposite direction to ours. Alcides, who at the time was eating some bread, whistled to the dog, and from that moment the animal left his master and came along with us.

Perhaps Brazilian dogs do not give affection because they never receive any. They were so timid that when you lifted your hand to caress them they would dash away yelling, with their tails between their legs, as if you had been about to strike them. I tried time after time to make friends with them—and I am generally quick at making friends with animals—but I gave up in despair the hope of gaining the slightest affection from those dogs.

When we came to the end of the island we found another great barrier of foliated rock extending from east to west, 500 m. across. The basin showed, moreover, three sets of giant rocks on the left side. In the north-easterly part where the river narrowed again there stood a range of hills 300 ft. high, extending from west to east, and parallel to the rocky barrier across the basin. A streamlet 3 m. wide coming from the south-west entered the Arinos from the left bank. The hill range which stood along the right bank of the river showed a rocky formation of a greyish colour right up to its summit, and was, in fact, a mere great rocky barrier with only a few trees growing in interstices which had been filled with earth and sand. The southern aspect of the range was an almost vertical wall.

The river was proceeding mostly in a westerly and north-westerly direction for long stretches of 3,500 m., 4,000 m., 2,000 m., until we came to an equilateral-triangular island, 300 m. each side—Erminia Island. A small channel not more than 20 m. across separated this from an irregularly-shaped island, 600 m. long—Niobe Island. After this came a low island of sand and gravel 5 ft. high and 300 m. long, with merely a few trees upon it, whereas the other two islands were covered with dense and most beautiful vegetation. The main channel of the river was 400 m. wide.

Araras (macaws) of great size and of a beautiful vermilion colour flew overhead, shrieking wildly at the sight of us. We began to find a great many jacarés (Caiman fissipis) or crocodiles. I saw one sleeping placidly on an islet of gravel. I landed and photographed it, subsequently waking it with a start by throwing a stone at it. My men, who were following cautiously behind me, opened a fusillade and killed it.

It was really amusing to watch the astonishment of the few animals and birds we met in that deserted part of Brazil, as none of them had seen a human being. They evidently did not know what to make of us. They generally looked with curiosity and surprise, and my men could fire shot after shot before they would attempt to run, or, if they were birds, fly away.

There were in that region some fine specimens of the cigana (Opisthocomus cristatus) and of the jacú (Penelope cristata). The cigana was beautiful to look at, with brown and yellow stripes, not unlike a pheasant, and a tuft of bright yellow feathers on the head. All of a sudden we came upon great numbers of these birds, and they supplied us with good meals.