Let's have a look at the water, though, all the same." We followed the doctor, going cautiously along till we found him standing gun in hand gazing from a bare spot right out at the huge tumbling body of water, which made the very rocks on which we stood tremble and vibrate as it thundered down.
In one spot, half-way down what looked to be a terribly gloomy chasm, a broad beam of sunlight shone right across the foam and fine spray that rose in a cloud, and from time to time this was spanned by a lovely iris, whose colours looked more beautiful than anything of the kind that I had before seen.
I could have stood for hours gazing at the soft oily looking water as it glided over the piled-up rocks, and watched it breaking up into spray and then plunge headlong into the chaos of water below; but the doctor laid his hand upon my shoulder and pointed upwards, when, leading the way, he climbed on and on till we were beyond the rocks which formed the shelf over which the water glided, and here we found ourselves at the edge of a narrow ravine, along which the stream flowed swiftly from far beyond our sight to the spot where it made its plunge.
We were in comparative quiet up here, the noise of the fall being cut off by the rocks, which seemed to hush it as soon as we had passed.
"Let us get back, my lads," the doctor said then; "I don't think we shall advance our business by inspecting this grand river;" and so leaving the water-worn smooth rock of the ravine, we retraced our steps, and at last, hot and fainting almost with the heat, reached the little camp, where our black followers were eagerly looking out for our return.
"Where's Jimmy ?" I said as I glanced round; but no one knew, and supposing that he had gone to hunt something that he considered good to eat I took no further notice then, though the doctor frowned, evidently considering that he ought to have been in camp.

Gyp was there though, ready to salute his master, who lay down at once, as he informed me in confidence, to rest his back.
We were only too glad to get under the shelter of the great overhanging rock, which gave us comparative coolness, situated as it was beneath a hill that was almost a mountain, towering up in successive ledges to the summit.
The walk, in spite of the excitement of the adventure, had given us an excellent appetite, and even Jack Penny ate away heartily, looking self-satisfied and as complacent as could be.
"Why, what are you laughing at, Jack ?" I said, as I happened to look up.
"I was only smiling," he whispered, "about my accident." "Smiling--at that!" I exclaimed.

"Why, I should have thought you would have been horrified at the very thought of it." "So I should if I had been a coward over it, Joe Carstairs; but I wasn't--now was I ?" "Coward! No," I said, "of course not.

Here, fill my cup with water." We were sitting pretty close to the edge of our shelter, which really might have been termed a very shallow cave, some twenty feet above the level; and as I spoke I held out the tin pannikin towards Jack, for the heat had made me terribly thirsty.

The next moment, though, something struck the tin mug and dashed it noisily out of my hand, while before I could recover from my astonishment, the doctor had dragged me backwards with one hand, giving Jack Penny a backhander on the chest with the other.
"Arrows!" he whispered.