"I know." Colonel Gorak tapped the attache case significantly. "The reports are all in here. But would you recognize Bela Kron if you saw him?"

"No, because I could not possibly have met him. Brewster may have, around those mines in Bildapore, but Bela Kron would have been very wary, any time he came to Calcutta."

That ended the conference for the evening. Tingling with excitement, the
boys found it difficult to go to sleep, even in the luxurious houseboat.
When they finally did drop off, the night seemed very short indeed, for
Colonel Gorak woke them early for their morning flight to Leh.

The five-hundred-mile trip was interesting, for below, the boys saw samples of the rugged terrain that they would have to cover later on. The nearest thing to a road was a crude trail that led through mountain passes twelve thousand feet in altitude, where the plane flew low between the hemming Himalaya ranges. There were occasional squatty villages and Buddhist monasteries perched high upon the mountainsides. These gave an idea of what Chonsi would be like if ever they found the place.

The immediate objective was Leh, and it proved interesting when they landed there. Though a town of only a few thousand inhabitants, its bazaars showed a mingling of many races including tribes in outlandish costumes, for this was the trade center where goods came in from Tibet by caravan. Biff and his companions found the equipment ready and the arrangements all made for their trek to the border. But Charles Keene and his Cessna had not yet arrived.

For two full days they waited, with the strain continually increasing. The only news was a roundabout report from Katmandu, stating that the Cessna had put down there and then resumed its flight, on the very day that Biff and his companions had flown from New Delhi up to Srinagar. On the third day, Colonel Gorak, who had come along this far, decided that the caravan must start. Barma Shah agreed.

"There is still a chance that your uncle's plane made a safe landing," Gorak told Biff. "But by now he will suppose that you have left Leh, so there is no need of staying here."

"In fact, it would be a mistake," declared Barma Shah, "for your uncle has our schedule and may be expecting us at one of the stopping posts. We are already a day late, but the first two stages are short, so we can make them in a single day."

Paced by plodding, heavily laden yaks, they made the required distance by nightfall. Their course was toward the glistening mountains to the south, but the whiteness that worried Biff was not the snow upon the Himalayan summits. The thick clouds surrounding the lower levels were the menace. They filled the passes and the valleys beyond, the only places where the plane could have made a landing.

By morning the clouds were heavier still, and Barma Shah was anxious to make an early start because of the threatening snow. Biff pleaded with him to wait, so they did for another hour, studying the increasing snow clouds.