Challenger had been acutely uneasy, continually scanning each bank of the river. Suddenly he gave an exclamation of satisfaction and pointed to a single tree, which projected at a peculiar angle over the side of the stream.
"What do you make of that?" he asked.
"It is surely an Assai palm," said Summerlee.
"Exactly. It was an Assai palm which I took for my landmark. The secret opening is half a mile onwards upon the other side of the river. There is no break in the trees. That is the wonder and the mystery of it. There where you see light-green rushes instead of dark-green undergrowth, there between the great cotton woods, that is my private gate into the unknown. Push through, and you will understand."
It was indeed a wonderful place. Having reached the spot marked by a line of light-green rushes, we poled our two canoes through them for some hundreds of yards, and eventually emerged into a placid and shallow stream, running clear and transparent over a sandy bottom. It may have been twenty yards across, and was banked in on each side by most luxuriant vegetation. No one who had not observed that for a short distance reeds had taken the place of shrubs, could possibly have guessed the existence of such a stream or dreamed of the fairyland beyond.
For a fairyland it was—the most wonderful that the imagination of man could conceive. The thick vegetation met overhead, interlacing into a natural
