Neither Hal nor George showed any alacrity. Ken watched his brother; he feared to see some of the symptoms of George's sickness. Both lads, however, seemed cheerful, though too tired to be of much use in the pitching of camp.
Ken could not recover his former good spirits. There was a sense of foreboding in his mind that all was not well, that he must hurry, hurry. And although George appeared to be holding his own, Hal healthy enough, and Pepe's brooding quiet at least no worse, Ken could not rid himself of gloom. If he had answered the question that knocked at his mind he would have admitted a certainty of disaster. So he kept active, and when there were no more tasks for that day he worked on his note-book, and then watched the flight of wild fowl.
The farther down the river the boys traveled the more numerous were the herons and cranes and ducks. But they saw no more of the beautiful pato real, as Pepe called them, or the little russet-colored ducks, or the dismal-voiced bitterns. On the other hand, wild geese were common, and there were flocks and flocks of teal and canvasbacks.
Pepe, as usual, cooked duck. And he had to eat it. George had lost his appetite altogether. Hal had lost his taste for meat, at least. And Ken made a frugal meal of rice.
"Boys," he said, "the less you eat from now on the better for you."
It took resolution to drink the cocoa, for Ken could not shut out remembrance of the green water and the shore-line of dead and decaying cattle. Still, he was parched with thirst; he had to drink. That night he slept ten hours without turning over. Next morning he had to shake Pepe to rouse him.
Ken took turns at the oars with Pepe. It was not only that he fancied Pepe was weakening and in need of an occasional rest, but the fact that he wanted to be occupied, and especially to keep in good condition. They made thirty miles by four o'clock, and most of it against a breeze. Not in the whole distance did they pass half a dozen places fit for a camp. Toward evening the river narrowed again, resembling somewhat the Santa Rosa of earlier acquaintance. The magnificent dark forests crowded high on the banks, always screened and curtained by gray moss, as if to keep their secrets.
The sun was just tipping with gold the mossy crests of a grove of giant ceibas, when the boys rounded a bend to come upon the first ledge of rocks for two days. A low, grassy promontory invited the eyes searching for camping-ground. This spot appeared ideal; it certainly was beautiful. The ledge jutted into the river almost to the opposite shore, forcing the water to rush through a rocky trough into a great foam-spotted pool below.
They could not pitch the tent, since the stony ground would not admit stakes, so they laid the canvas flat. Pepe went up the bank with his machete in search of firewood. To Ken's utmost delight he found a little spring of sweet water trickling from the ledge, and by digging a hole was enabled to get a drink, the first one in more than a week.
A little later, as he was spreading the blankets, George called his attention to shouts up in the woods.