The next enemy with whom the Portuguese had to contend were of a different race. The Dutch had begun to trade on the north of the _Amazons_, and had established factories on some of the numerous islands at its mouth. They had given out to the natives that a fleet would soon arrive to establish a colony, and when this intelligence reached Caldeira (a Portuguese officer who had been sent north from _Maranham_ with two hundred men to establish a settlement on the _Amazons_), it was confirmed by the arrival of a large Dutch vessel. The ship was attacked by his orders, but the Dutchmen defended themselves so well that they could not be conquered save by setting fire to the vessel. This new Captaincy, which was called _Pará_, was disturbed with serious dissensions, which led to Caldeira, the governor, being put in chains by his mutinous garrison. The colony had likewise to encounter long-continued hostility on the part of the natives. A new governor was sent out from Lisbon, with orders to send home as prisoners both Caldeira and the officer who had accepted the government in his place from the mutineers. When this was done, the war against the natives was prosecuted, and they were successfully hunted down by a ruffian called Maciel, whose object seemed to be to exterminate them. If this were his purpose, it was still further assisted by the fearful havoc caused at this time amongst them by the small-pox. [Sidenote: 1622.] In the year 1622 a new governor-general brought with him some Jesuits; but the appearance of these Fathers in _Maranham_ excited a tumult against them; for, much to the credit of their order, it had set itself in systematic opposition to the iniquitous conduct of the Portuguese towards the natives. A compromise had to be arrived at, by which the Jesuits agreed, under pain of banishment and the confiscation of their property, not to interfere with the domesticated natives. As a wide belt of desolation had been placed round the Portuguese settlements by Maciel, it was somewhat difficult for the Fathers to find any other natives to exercise their influence upon. About this time much was done to explore the region of the Lower _Amazons_, in which service it is to be admitted that Maciel, who was now captain of _Pará_, was as energetic as he was ever savage in his bearing towards the Indians. At the river _Curupá_ some of his people found Dutch, English, and French adventurers, who had made trenches for their defence, and had enlisted natives to assist them. From this post they were driven by Maciel, who destroyed their factories both on the _Curupá_ and on the island of _Tocujuz_.