[Illustration: A dozen steps and Biff was over]
"It needs much more." The interruption came from a squatty, broadly built porter named Hurdu, as he tested the tree with a clumsy foot. "We need ten more trees like this."
"We need a rail for the bridge," declared Chandra calmly. "Can somebody bring me a rope?"
Biff supplied a rope, and Chandra hitched one end around a tree. Like a monkey, he scrambled across the fallen tree, carrying the free end of the rope with him. A single slip and Chandra would have gone into the flood, which probably would have pleased Hurdu, who was watching intently. But Chandra was across in no time and promptly hitched the rope to a tree on the opposite bank, drawing it taut as he did.
"Now, walk across log bridge," called Chandra, "and hold on to rope rail."
Biff shouldered a pack and followed instructions, keeping his eyes fixed straight ahead, not on the furious current, which would have distracted him. With one hand on the rope, it was simple to steady himself while he advanced one foot, then the other. A dozen steps and he was over. Now the other boys were following his example. That was all the porters needed. They hoisted their full burdens, eighty pounds to a man, and stalked across Chandra's simple bridge in regular procession.
Charles Keene and Barma Shah followed, as did Tikse and Hurdu, though the last two exchanged glares before they started and after they had crossed. Now that the yaks had gone their way, a dispute appeared to be in the making as to who was the chief guide of the party. Both Tikse and Hurdu wanted that honor.
The narrow path made a steep ascent up the side of a high cliff, and before the porters were out of sight of Chandra's crude bridge, they saw the surging stream carry it away. Time had been the all-important factor, where that crossing was concerned. But an hour later, the party came to something much more formidable.
The trail swung along the fringe of a tremendous, steep-walled gorge a thousand feet in depth and a hundred or more across. Down below, a river thundered like a hungry dragon, ready to devour any human prey. Chandra was pleased to see that this chasm was already bridged, for he could have done nothing with his hand-axe.
The bridge was of a suspension type, so crude and flimsy of construction that it seemed to hover in midair. Yet it evidently was strong enough, for Barma Shah, who was up in front, started across without hesitation. Tikse and Hurdu were close behind him, followed by the long procession of porters with their heavy packs. As Biff paused to look for the other boys, he found Chuba close beside him. As usual, Chuba had a saying to fit the situation.