Although the river was wide, the steamer moved along the channel slowly and with caution. This was done because of the numerous bars and snags which form to impede navigation—just as they sometimes form on the Mississippi and Missouri of our own country.

“It is said that once this river country was populated by great tribes of Indians that have to-day totally disappeared,” said the professor. “They were a peaceful nation, living on the fruit which abounded on every side, on the numerous fish which the river afforded, and on the small wild animals found in the forests. But soon after Columbus discovered the land, the Spaniards came over with a thirst for gold and power, and that was the end of a peace which had perhaps reigned for centuries.”

“What of a pre-historic civilization here?” asked Sam.

“Some few traces have been found, but not many. The civilization was confined more directly to the western coast of the country and to Central America. But even of that the most is lost, and lost perhaps forever.”

The outlook along the lower Orinoco is not inviting, and the boys soon tired of it. Either bank was lined with grass and reeds, with here and there a patch of wild brushwood, the home of birds innumerable. Pelicans were there, and wild ducks, and there was an odor of heated salt-meadow water which was at times almost overpowering. In the distance were immense forests, but so far off that nothing about them could be clearly distinguished.

“Set a fellow ashore along there and he could get lost without half trying,” observed Mark. “How awfully lonesome it looks.”

“Spare me from getting lost!” said Frank, with something like a shiver. “I just want to have a good time and nothing else.”

To help pass the time, the professor brought out one of the guns and some ammunition and let them take turns at shooting the wild birds as they came within reasonable distance, at the same time giving the lads several necessary lessons in aiming.

“Don’t be in a hurry,” he cautioned to Frank. “Be quick, but not too quick, is a good huntsman’s motto. Now try your hand at the pelican yonder.”

Frank took careful aim and fired, but missed his mark. Then Darry tried and the big water bird was hit in the wing, and speedily dove out of sight among the reeds.