While the blacks were arranging our property into fit packages for carrying, the two boys and I accompanied David to the mouth of the river, which, as I said, was lined with mangrove bushes, a ledge of rocks which ran out some way enabling us to get a view up the stream. We had thus an opportunity of examining those curious trees. Innumerable roots rose out of the water, lifting the trunk far above it, and from its upper part shot off numerous branches with bright green foliage, which grew in radiated tufts at their ends. Many of them were bespangled with large gaily-coloured flowers, giving them a far more attractive appearance than could be supposed, considering the dark, slimy mud out of which they grew. From the branches and trunk, again, hung down numberless pendulous roots, which had struck into the ground, of all thicknesses—some mere thin ropes, others the size of a man’s leg—thus appearing as if the tree was supported by artificial poles stuck into the ground. David told me that the seeds germinate on the branches, when, having gained a considerable length, they fall down into the soft mud, burying themselves by means of their sharp points, and soon taking root, spring upwards again towards the parent tree. Thus the mangrove forms an almost impenetrable barrier along the banks of the rivers. On the other side of the stream, indeed, we saw that they had advanced a considerable distance into the ocean, their mighty roots being able to stem even the waves of the Atlantic. Near where we stood the ground was rather more open, and we saw the black mud covered with numberless marine animals, sea-urchins, holothuria, or sea-slugs, crabs, and several other creatures, many of brilliant hues, which contrasted curiously with the dark mud over which they were crawling. The roots of the trees were also covered with mussels, oysters, and other Crustacea. But the most curious creature was a small fish which I had before seen, called by sailors Jumping Johnny. David called him a close-eyed gudgeon (periophthalmus). He was of the oddest shape, and went jumping about sometimes like a frog, and sometimes gliding in an awkward manner over the mud. We were watching one of them when Leo cried out, “Why, the fish is climbing the tree—see, see!” And so in reality he was, working his way up by means of his pectoral fins, David supposed in search of some of the minute Crustacea which clung to the roots. Jumping Johnny, having eaten as much as he could swallow, or slipping off by accident, fell back into the mud, when we saw issuing sideways from under the roots a huge crab. David said he was of the Grapsus family. Suddenly he gave a spring, and seized the unfortunate Johnny in his vice-like gripe, and instantly began to make his dinner off the incautious fish, who, as Leo said, would have been wiser if he had kept in the water, and not attempted to imitate the habits of a terrestrial animal.

As we looked up the stream we saw numerous birds feeding along the banks. Among them were tall flamingoes, rose-coloured spoonbills, snow-white egrets, and countless other water-fowl.

“I am glad we have been able to witness this scene here,” said David, “where we can benefit by the sea-breeze; for such deadly miasmas rise from these mangrove swamps, that the further we keep off from them the better.”

While we were watching we saw a canoe, paddled by half a dozen blacks, dart out from the mouth of a creek which had been concealed by the thick trees. We drew back, not knowing whether the people in the canoes might prove friends or foes. Another followed at a little distance, and proceeded up the stream. They were impelled by paddles with broad blades; and the sound of voices reached our ears as if they were singing.

“I do not think they can be enemies, or they would not be so merry,” said Natty.

“I hope not,” I observed.

“If we could stop them we might hire their canoes to convey us up the river.”

“It might be dangerous to do so,” said David, “on two accounts: they might prove treacherous, and the miasmas rising from the stream might also possibly give some of us fever. I think we had better let them go on their way, and proceed as Senhor Silva proposed.”

Returning, we found the party ready to start. We told Senhor Silva about the canoes.

“I think you did wisely to let them go,” he remarked. “Unless we were under the protection of their chief man, or king, as he is called, we could not tell how they might behave. We must use great caution in our intercourse with these people. When we have shown them that we are friends, and desire to do them all the good in our power, we, I hope, shall find them faithful; but they have become so debased by their intercourse with the white people, and especially, I am sorry to say, with my countrymen, who often deal treacherously with them, that they cannot be depended on. They in return, as might naturally be supposed, cheat and deceive the whites in every way.”