There are now vessels coming from and going to all parts of Europe and America from Amazon ports. There are lines of great steamers on the main stream, lines of smaller steamers on the big tributaries, and launches and small craft of all sizes on the affluent branches. Often the passing ships, steamers, launches, etc., almost took the form of a procession on the lower waters.
Everywhere the smaller ships were gathering the products of the great Amazon basin-rubber, cocoanuts, hardwoods, dyewoods, pelts, tropical fruits and other commodities. Every year over three million tons of products come down the great river. The Amazon drains a country as large as the United States east of the Mississippi. Its feeders reach the Andes, draining watersheds within a hundred miles of the Pacific ocean. It has tributaries fifteen hundred miles long.
It did not take the Black Bear very long to pass the green islands near the delta. The river there looks like an ocean. In fact, the main branch of the Amazon is from fifty miles to two hundred miles in width. Some of the tributaries are a hundred miles wide. It is from fifty to two hundred feet deep. The water is always dark colored because of the wash brought down from the uplands. For a long time it did not seem possible to the boys that they were sailing on a river instead of an ocean.
"Ned and the boys must be over Paraguay now," Jack said, one day, after they had been on the river nearly a week without accident or important incident of any kind.
"Yes," Frank replied, "they must be there by this time. Jimmie said they were to leave San Francisco on the 7th, or about that time. It would take a week or more to get to Lima, for they couldn't remain in the air long at a time, and the resting spells would set them back a little. Suppose they got to Lima on the 14th, which was last Monday, they could rest up and go prowling over that dirty little republic—which is not a republic at all, but a despotism tempered by revolution."
"I'd like to know just what course Ned has decided on," Harry said.
"I don't see how he's going to get to Mr. Lyman."
"He'll find a way," Jack insisted. "He always has, and he always will."
It will be seen that the boys were tolerably accurate in their estimates of the speed of the Nelson. On the day they were discussing the possible location of the big airship, which was the 18th of August, the Nelson was in the center of as pretty a muss as Ned had ever mixed with.
The boys in the Black Bear put on all speed, traveling nights as well as days, and before long began watching the heavens, for an aeroplane. But the lads on the Nelson were not looking for a boat poking her nose toward the Andes—"a relief expedition," as Jack called it!