It was in the early forenoon of the next day that we made the great departure. Since dawn Professor 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 wi
