ground beneath them opened out. The blaze of the sunlight was replaced by insensible degrees by cool shadow. The trees became at last vast pillars that rose up to a canopy of greenery far overhead. Dim white flowers hung from their stems, and ropy creepers swung from tree to tree. The shadow deepened. On the ground, blotched fungi and a red-brown incrustation became frequent.
Evans shivered. "It seems almost cold here after the blaze outside."
"I hope we are keeping to the straight," said Hooker.
Presently they saw, far ahead, a gap in the sombre darkness where white shafts of hot sunlight smote into the forest. There also was brilliant green undergrowth and coloured flowers. Then they heard the rush of water.
"Here is the river. We should be close to it now," said Hooker.
The vegetation was thick by the river bank. Great plants, as yet unnamed,
