At the end of the amphibious crew come frogs and toads, which swarm in all the rivers, lakes, and marshes, and even the very plains of Paraguay. But what is their use, what their occupation? They go on singing their old complaint in the mud, though in Paraguay they have nothing to complain of; for not being reckoned amongst the number of eatables, and being entirely excluded from the kitchen, they are neither desired nor attacked, and consequently live in the completest security. To destroy the race of frogs, I had long wished that the voracious Indians would take it into their heads to eat them, for whenever we slept in the open air by the side of a river or lake, we were exceedingly annoyed by their croaking. Their voice, as well as colour, is extremely various, for some utter a gentle, clear, sharp sound, others, perhaps the more aged ones, a rough, hoarse, disagreeable croaking. Of toads, horse-leeches, and other insects of that description, we shall speak in another place. BIRDS. Paraguay has scarcely any European bird, except the swallow, but it abounds in native ones, foreign to Europe. The former excel in the sweetness of their voice, the latter in the elegance of their plumage. Out of many I will describe a few. THE HUMMING BIRD. The most curious is a bird, which is the smallest, and at the same time the most beautiful of all the winged tribe. The Spaniards have with justice named it picaflor, for it plucks the flowers out of which it sucks juice like a bee. It charms the eye with the exquisite beauty of its colour and plumage. The whole of its little body is scarce bigger than an olive or a nutmeg. Its bill is very long, but slenderer than a needle, its eyes extremely lively, and its tongue broad, but thinner than a silken thread. It sometimes utters a shrill whistle which can hardly be heard. In the country, in a chapel that had long been deserted, I found the nest of one of these birds; scarce bigger than a common walnut, it hung suspended by a horse-hair from two corners of the wall, and in it the mother was then sitting upon two little eggs. Its feathers are sometimes of a bright green, sometimes (for there are nine different species of them in Paraguay) of a blue, sometimes of a fiery red colour; but all seem clothed with most refulgent gold. That brilliant hue which shines in the expanded tail of a peacock, or in a drake's neck, is dull in comparison with the golden resplendence of this little bird. In sucking juice from flowers it does not stand upon its feet, but seems to hang in the air, and is always borne swiftly along, with its feathers suspended and tremulous. Some have caught birds of this kind and brought them home, but though carefully fed upon melted sugar, they never lived more than four days, being always used to the nectar of flowers. With their feathers, which nature has painted with