which they catch on the wing, and then return to their former station to devour them. Then there are the trogons, with a strong serrated bill, which have similar habits; and the little humming-birds, though they generally procure insects from the flowers, often take them on the wing, like any other fissirostral bird.
What birds can have their bills more peculiarly formed than the ibis, the spoonbill, and the heron? Yet they may be seen side by side, picking up the same food from the shallow water on the beach; and on opening their stomachs, we find the same little Crustacea and shell-fish in them all. Then among the fruit-eating birds, there are pigeons, parrots, toucans, and chatterers, — families as distinct and widely separated as possible, — which yet may be often seen feeding all together on the same tree; for in the forests of South America, certain fruits are favourites with almost every kind of fruit-eating bird. It has been assumed by some writers on Natural History, that every wild fruit is the food of some bird or animal, and that the varied forms and structure of their mouths may be necessitated by the peculiar character of the fruits they are to feed on; but there is more of imagination than fact in this statement: the number of wild fruits furnishing food for birds is very limited, and birds of the most varied structure and of every size will be found visiting the same tree.
Insects were now more abundant than ever, and new kinds were met with almost every day. Lovely little butterflies, spangled with gold, or glittering with the most splendid metallic tints, hid themselves under leaves or expanded their wings in the morning sun; while the larger and more majestic kinds flew lazily along the shaded forest paths. The more sombre Hesperidæ. were the most abundant, and it would often happen that, of a dozen specimens taken in a day's excursion, no two were alike.
At length the canoe, for which I had been waiting, was ready to sail; and on the 3rd of November we left Pará for the island of Mexiana, situated in the main stream of the Amazon, between the great island of Marajó and the northern shore. We had to go down the Para river, and round the eastern point of Marajó, where we were quite exposed to the ocean; and, though most of the time in fresh water, I was very sea-sick all the voyage, which lasted four days. The canoe was
