Mr Bates describes a tame one he met with, which was excessively confiding in its disposition, very lively and nimble, and in no way mischievous. It delighted to be caressed by all persons who came into the house. It used to sleep in the hammock of its owner, or nestle in his bosom half the day as he lay reading. From the cleanliness of its habits, and the prettiness of its features and ways, it was a great favourite with every one. He himself had a similar pet, which was kept in a box, in which was placed a broad-mouthed glass jar. Into this it would dive when any one entered the room, and, turning round, thrust forth its inquisitive face to stare at the intruder. It was very active at night, giving vent at intervals to a hoarse cry, like the suppressed bark of a dog, and scampering about the room after cockroaches and spiders. Although it preferred insects, it ate all kinds of fruit, but would not touch either raw or cooked meat. Its brothers, when let loose about the house, are very useful in clearing the chambers of bats, as well as insects and vermin. It is monogamous. The ei-a and its wife may often be discovered together tending their small family in some hollow trunk. Its cry is wonderfully loud, considering its small size; and curious as it may seem, is not unlike the roar of the jaguar. It can also hiss or spit in the fashion of an angry cat, while it utters a curious mew resembling the same creature. It sometimes gives a guttural, short, and rapidly-repeated bark. There are several species of night monkeys with very similar habits. It is difficult, except when they are in captivity, to obtain a correct idea of the habits of these interesting little, animals,--though, of course, when they are tamed, they must abandon some of those they possessed in a state of nature. Of their dispositions, however, a very fair notion may be formed from the way they behave when in captivity. The above descriptions refer only to a few of the numerous species of monkeys which exist in the South American forests, but as typical forms have been selected, a tolerable idea of the whole may be obtained. PART THREE, CHAPTER THIRTEEN. BIRDS. HUMMING-BIRDS. Most of the humming-birds found on the banks of the Amazon belong to the genus Phaethornis; remarkable for their long, graduated tails, the central feathers of which greatly exceed the others. Their nests are curious and beautiful, being formed in a long funnel-like shape, tapering below to a slender point. They are woven with great delicacy, and attached to some twig, or hanging leaf, by means of spider's webs. They are lined with a soft silky cotton fibre; and composed, externally, of a woolly kind of furze, bound together with which appears also to be spider's web.