I wanted to push on; but the manager looked grave, and told me the navigation up there was so dangerous that it would be advisable, the sun being very low already, to wait where we were till next morning. Moreover, he pointed out that if the warning to approach cautiously were to be followed, we must approach in daylight -- not at dusk or in the dark.

     This was sensible enough. Eight miles meant nearly three hours' steaming for us, and I could also see suspicious ripples at the upper end of the reach. Nevertheless, I was annoyed beyond expression at the delay, and most unreasonably, too, since one night more could not matter much after so many months.

     As we had plenty of wood, and caution was the word, I brought up in the middle of the stream. The reach was narrow, straight, with high sides like a railway cutting. The dusk came gliding into it long before the sun had set. The current ran smooth and swift, but a dumb immobility sat on the banks.

     The living trees, lashed together by the creepers and every living bush of the undergrowth, might have been changed into stone, even to the slenderest twig, to the lightest leaf. It was not sleep -- it seemed unnatural, like a state of trance. Not the faintest sound of any kind could be heard.