"So you bribed Luiz to kill me, to make sure of meeting Nara first."

"No, no, Senhor. I only wanted Luiz to delay your safari, as Pepito and Urubu will tell you."

THE RIVER OF DEATH 115.

Serbot gestured to the pair, and Pepito smiled broadly while Urubu showed his usual ugly grin.

"I wanted to talk to Nara," continued Serbot earnestly, "because I had heard that he was willing to sell his gold mine to the highest bidder. That is, if he really has a gold mine. Perhaps you could tell me that?"

"I wouldn't know," returned Mr. Brewster. "As you say, I am only interested in rubber. And it's time that I was starting off to look for some."

With that parting, Mr. Brewster motioned his companions back toward the main trail. They had only gone a dozen paces, when Mr. Brewster under toned: "Take turns glancing back to see what that crowd is doing. I don't trust any of them, particularly Urubu."

Biff took the first look and reported that Urubu, like Serbot and Pepito, was leaning on his gun while the trio apparently discussed what to do next. Soon Kamuka reported the same thing. Then Mr. Whitman looked back and announced that the group was now out of sight.

Mr. Brewster called for a quicker pace, and when they reached the main trail, they moved even faster- so fast in fact, that Biff and Kamuka had to jog along to keep up with the three men.

"We came back to look for you at dawn," Biff's father told the boys, "so our bearers will be packed and waiting for us when we reach our last night's campsite. If Serbot pushes his crew to overtake us, 116 .

they will be worn out, while we'll be starting fresh."

Mr. Whitman was feeling the heat, for he removed his white helmet to mop his forehead.

"More likely," he said, "Serbot will try to overtake Nara by going up the bank of the Rio Negro. That makes all this hurry useless."

"No, we still must keep ahead of Serbot," Mr. Brewster insisted. "If Serbot has guessed where Nara is going, he will move up the Rio Del Muerte while we are coming down it."

The bearers were waiting when they reached the campsite, and fell promptly into line. There was little difficulty in spurring them on. The mere mention that the Macus were behind them was enough. During the next few days, the bearers toiled steadily along the inland trail. Apparently, there was nothing that they feared more than the Macus.

Nothing, at least, until the safari reached a deep but narrow stream that the bearers promptly identified as Rio Del Muerte. Then they broke into a babble of Indian talk that only Jacome was able to translate.

"They say they leave us here," declared Jacome. "It is death, they say, to go down this river."

Mr. Brewster studied the narrow trail that flanked the riverbank and dwindled off into the thick green of the jungle.

"Tell them that if they go back the way they came, they may meet the Macus."

Jacome translated Mr. Brewster's comment. The THE RIVER OF DEATH 117.

bearers chattered back excitedly, and Jacome announced: "They say they would rather meet Macu than stay near Rio Del Muerte. They say they go home now."

While Jacome spoke, the bearers picked up their few belongings and started on their homeward trek. Biff and Kamuka noted that they did not even stop to fill their water bags from the stream that they seemed to dread so much.

"What do you make of it, Kamuka?" Biff asked.

"I do not know," Kamuka replied. "I cannot even understand the things they say to Jacome, except that they are afraid to go downriver."

However, the expedition was far from being stranded. The pack bags that the native bearers had abandoned contained three rubber boats, complete with aluminum seats and paddles. Biff and Kamuka helped pump them full of air, so that they took on a squatty, roundish shape.

Then, after a survey of the rubber flotilla, Mr. Brewster decided to take Biff and Kamuka with him in one boat, while Mr. Whitman and Jacome manned the second, each carrying whatever equipment it could bear. The third boat was converted into a raft and loaded with all the remaining packs. Biff's father took it in tow, letting Hal Whitman pace the trip downstream.

To Biff, this was a fine change after the long, sweaty hours on the trail when he and Kamuka had 118 .

helped relieve the bearers. They were floating through a maze of jungle green that at times actually-arched into a tunnel above them.

Though heavily loaded, the boats moved easily, more swiftly as the jungle banks narrowed and the river itself deepened. Whitman was waving back cheerily as they skimmed off the mileage. Suddenly they saw him rise and wag his paddle frantically as he shouted: "Stay back-stay back-"

His words were drowned by a mighty roar as they turned the bend and saw what Whitman had already viewed. No wonder the natives called this the Rio Del Muerte, the River of Death! Just ahead, a curved crest of foam showed where the stream took a sudden drop in the form of a mammoth waterfall-a sheer plunge to doom on the rocks a hundred feet below!

CHAPTER XIV.

The Devil's Gateway "PADDLE hard on the right, boys-with all your might!"

Mr. Brewster shouted the order above the river's tumult, and all three bent to the task. They brought their boat broadside to the approaching brink and drove it toward the left bank of the stream, which here was scarcely a hundred feet wide.

It was a gruelling race against death. There was no escaping the powerful current that seemed to draw them with a suction pull. Yet the jungle bank was coming closer with every stroke.

They were almost there now, but Biff, in the bow, had no chance to catch the first projecting tree, as the boat was swept past it. He worked madly with the paddle instead, for here the bank was eaten away by the current, and there was nothing to grab.

It seemed certain now that the boat would be carried over the falls, when suddenly it began to swirl 120 .

about, and another few strokes brought them into the last big clump of overhanging brush.

Biff and Kamuka managed to grab hold and cling there, while Mr. Brewster worked the boat into the bank itself. Then new disaster loomed in the shape of the pack boat which had been following them on its towline. As the other boat spun past, its line went taut before Mr. Brewster could cut it.

Biff's shoulders seemed to wrench half from their sockets, and he felt the bush pull loose from the soil. Then the tug ended as the other boat came full about, giving them a soft thump. Churned into this new position, it bulked in between the bank and their own craft, almost wedging them loose and out into the stream.

Mr. Brewster made a quick leap across the baggage and up on to the high bank, carrying the slack line which he hitched over a tree bough. That secured both boats, while the boys clambered ash.o.r.e.

In cutting away the bank, the current had created an eddy which accounted for the final swirl that had carried both boats to safety. Yet only a dozen feet away, the tangled jungle growth actually quivered on the fringe of the falls that dropped in one huge deluge into the dizzy depths below.

It was from there that they first looked for Whitman's boat, expecting to see it bobbing somewhere in the rocky gorge a hundred feet below. The rising mist obscured the bottom of the falls where the terrific THE DEVIL'S GATEWAY 121.

torrent would by now have battered the bodies of Mr. Whitman and Jacome into a pulp.

Or so they thought, until Mr. Brewster stepped closer to the overhanging bushes and gained a full view of the crescent-shaped brink. He beckoned to the boys and exclaimed: "Look there!"

Caught between two low rocks, Whitman's boat was jammed on the brink, its two occupants still alive, temporarily at least. Heavily loaded, wide of beam and flexible because of its inflated sides, the rubber boat had snagged where almost any other craft would have cracked up and gone over the crest.

Other low rocks jutted at close intervals along the foamy brim. Biff noticed them when he saw Mr. Whitman rise in the boat to point them out to Jacome.

"Those rocks are like steppingstones, Dad!" exclaimed Biff. "If we throw a line to them, maybe we can haul them ash.o.r.e-"

An interruption came as the boat wabbled on its precarious perch, due to Mr. Whitman's shift of weight. It settled back again, as Whitman plopped down into the stern. From the sh.o.r.e, Biff's father gestured for Whitman to stay down and received a nod in reply. Turning to Biff, Mr. Brewster declared: "Throwing them a line won't help. If they missed their footing, they would be swept away in spite of it. We'll have to carry it across to the other bank and moor it there."

122 .

From the pack boat, Mr. Brewster produced a coil of thin, strong rope which he estimated as more than long enough to bridge the stream and return. He looped the center around a tree trunk and gave the ends to Kamuka, motioning him into the empty boat. Then, with Biff helping, Mr. Brewster kept working his way up along the bank, pulling the boat from the sh.o.r.e, while Kamuka nimbly grabbed at pa.s.sing branches.

After they were a safe distance upstream, Mr. Brewster brought Biff into the boat with him and told the boys: "Paddle hard on the left, this time. Try to swing the boat upstream-and don't stop, not for one instant!"

Again, they were in the swirl of the swift-flowing current where Biff, paddling bow, found it impossible to bring the boat about, even with Kamuka working valiantly to help him. But Mr. Brewster had allowed for that. Their efforts, plus his own, brought them to the far bank, still well above the falls.

There, the boys warped the boat downstream while Biff's father hauled in the floating rope. Picking a landing spot, they carried one end of the rope about a tree, where they drew it taut and tied it to the other end. The rope now followed the slight curve of the cataract's brim from the opposite bank as far as Whitman's stranded boat.

Mr. Brewster then took a loop of rope around a THE DEVIL'S GATEWAY 123.

paddle and began to twist it, winch fashion. He let the boys take over, one at each end of the paddle, while he waved to the boat and pointed to the water. Whitman and Jacome understood the plan at once and caught on to the rope as it emerged.

Rapidly, the boys turned the paddle, tightening the rope until it looked like a suspension cable, except for its outward curve. Mr. Whitman and Jacome, rising gradually from the boat, gripped the center of the double line.

Jacome took to the steppingstones first, moving in limber, catlike fashion as he left the boat. Mr. Whitman, who had settled low to offset the loss in weight, watched every move, still clutching the center of the rope, which also helped to steady the boat.

Hand over hand, Jacome followed the rope, swinging from one projecting rock to the next, or actually leaping a s.p.a.ce where the water gushed through. It became easier as Jacome neared the bank where the pack boat was moored. There, Jacome swung on the sh.o.r.e and waved for Whitman to follow.

As before, Whitman rose too rapidly. This time, the boat skidded out from under him; as it did, he hopped to the nearest rock and balanced there by clinging to the rope. Biff saw the boat slide over the falls, tumbling from sight with the light luggage it contained.

Breathlessly, Biff watched Hal Whitman swing to the next broad stone, where he swayed dangerously while Mr. Brewster and Jacome, tightening their ends 124 .

of the rope, helped to steady him. What had been child's play for Jacome would have meant disaster for Whitman, without that timely aid.

The last leap, that looked the easiest, was the most dangerous of all. Where Jacome had swung himself clear up on the bank, Whitman dropped short, but not into the sweeping current that fringed the sh.o.r.e. Jacome had wisely edged the pack boat into the gap. Whitman landed on the luggage, and Jacome pulled him up to the bank above.

During the next few hours, the party worked its way down the steep walls that flanked the waterfall. This might have been impossible, except for the holds afforded by the heavy jungle growth. The boats were deflated and lowered by ropes. Then, when Biff and Kamuka reached the gorge, they found a shallow stretch where they waded and swam the river, to receive the luggage from the pack boat that Mr. Whitman and Jacome lowered from their side.

Farther downstream, the boys found Whitman's boat, still intact, along with its baggage, which Jacome had tied inside the rubber craft before abandoning it. Biff and Kamuka hauled it ash.o.r.e and spread the contents of the bags so they could dry.

That night, they camped within sound of the big waterfall, and the m.u.f.fled roar seemed almost musical, now that its hazard had been pa.s.sed. But Hal Whitman, seated by the campfire, spoke bitterly about his harrowing experience.

"I blame Joe Nara for all this," he declared. "I be- THE DEVIL'S GATEWAY 125.

lieve he is our real enemy, not Nicholas Serbot."

"How do you figure that, Hal?" inquired Mr. Brewster.

"First, Nara must have snooped a lot more than he let on," argued Whitman, "in order to learn about that boathouse down in Manaus. Am I right? "

"You may be right," conceded Mr. Brewster. "Go on."

"And by checking on me," continued Whitman, "he found out about you. He learned that you were staying at the Hotel Jacares. So he sent one of his Indians to steal your map-"

"Wait, Hal," interposed Mr. Brewster with a smile. "How could he have known that I even had the map?"

"He knew Lew Kirby made a deal with somebody. You were the logical man, or you wouldn't have gone to all the trouble and expense of sending me up to Santa Isabel to organize a safari."

"But if Nara knew I had the map, why would he want to steal it? Lew Kirby was his partner. Remember?"

"I remember." Mr. Whitman smiled grimly. "What's more, so does Joe Nara, and that's probably the one thing he'd like most to forget."

"So he wouldn't be bound by any deal that Kirby made?"

"Exactly. Without the map, you haven't any claim. If Kirby signed over his share of the mine to you, you would need the map to prove it."

126 .

"I still have part of it, Hal."

"Yes," acknowledged Whitman, "but I'll bet that Joe Nara only let you keep it because he decided it wouldn't do you any good. Think it over, and you'll see I'm right."

Whether or not Mr. Brewster thought it over during the night, Biff certainly did. When they were loading the boats at dawn to resume their trip downriver, Biff asked his father: "Do you think that Mr. Whitman is right about Joe Nara?"

"There may be something in what he says," admitted Mr. Brewster. "Nara may have been keeping something from us."

During the day, they made speedy progress down the river, hugging the bank at every bend to avoid new waterfalls. But the trip proved smooth, which only brought more grumbles from Whitman.

"Nara sent us down this river to get rid of us," he declared, as they paddled along. "It wasn't his fault that the Rio Del Muerte failed to live up to its name. As for that gateway where we're supposed to meet him-El Porto Del Diablo-I don't think there is such a place."

One hour later, those doubts were dispelled. As the boats pa.s.sed a bend, they came to an opening in the jungle that looked like the dry bed of a stream that had once joined the Rio Del Muerte. Then, amid the thick green foliage, loomed the very rock that Nara THE DEVIL'S GATEWAY 127.

had mentioned, split like a huge gateway, a short distance up the ravine.

They pulled the boats up on the low, sandy sh.o.r.e, where Mr. Brewster decided to leave the packs and other equipment, though not for long.

"Nara said to come through the gateway," he said, "and meet him somewhere up the ravine. If we don't see him soon, we can come back and bring the luggage in relays."

The trail narrowed at the end of half a mile and veered sharply beneath a high, bulging cliff that slanted back like a gigantic brow, cutting off the sunlight. Mr. Brewster, well in advance, had reached the turn in the ravine, when Jacome, bringing up the rear of the procession, gave a loud, warning shout.

The rest looked up in time to see the tiny, squatty figures of six men drop suddenly behind a row of rocks that resembled the top edge of a castle tower. But that impression was a brief one. As the group stared from below, they saw the rocky summit topple forward.

Those watchers on the cliff top had launched a ma.s.s of bounding boulders that encountered bigger chunks of granite and carried them along, with the earth in which they were imbedded. An avalanche of stone and dirt was gaining size as it roared down the slope, threatening to block the narrow ravine and bury every member of the party that had come into its path!

CHAPTER XV.

Fabulous El Dorado WHILE the others stood rooted, staring upward, Biff looked for his father, in the frantic hope of giving him some last-moment warning. Up ahead, Mr. Brewster was waving for them to join him. Biff grabbed Whitman by the arm and tried to start him forward, at the same time yelling to Kamuka and Jacome: "It's our only chance! Maybe Dad can get us past the turn in the ravine!"

They all were starting forward before Biff finished speaking, but their chance faded as the landslide's roar increased. Spreading as it came over the cliff edge, the first wave of dirt and stone was not only peppering them; it was pouring into the side pa.s.sage that seemed their only refuge.