Let's get nearer," he urged, "up there by the fall." We scrambled along the steep banks and got close to the pool that foamed and boiled beneath the falling water.

Here we searched the border and found traces of color beyond dispute.

More--Jeff suddenly held up an unlooked-for trophy.
It was only a rag, a long, raveled fragment of cloth.

But it was a well-woven fabric, with a pattern, and of a clear scarlet that the water had not faded.

No savage tribe that we had heard of made such fabrics.
The guide stood serenely on the bank, well pleased with our excitement.
"One day blue--one day red--one day green," he told us, and pulled from his pouch another strip of bright-hued cloth.
"Come down," he said, pointing to the cataract.