"Sure thing," said Risley. "Just listen to me. That half-caste Saya Chone comes from up-country somewhere in the direction the Professor headed for after leaving Mogok. That's the starting-point for the whole business. He's mixed up in it from first to last, that's plain enough, by his showing up at Rushmere and then followin' Jack to Brindisi as he must have done. What brought him trackin' us all this way if he didn't know about the big ruby and was in with the gang that's carried off the Professor?"

"But why are you so sure that they have carried Tom Haydon off, Risley?" asked Mr. Buxton. "Perhaps they--" Mr. Buxton paused, unable to put into words the terrible thought which filled his mind.

"Say it right out, sir," said Buck encouragingly. "You can say it out, for I don't believe it's the least bit true. You meant, suppose they've murdered the Professor for the ruby?"

Mr. Buxton nodded, and Jack went white about the lips.

"Well, that's all right," said Buck cheerfully, "they ain't done that, anyway. First thing, if so we'd ha' found the Professor, for all they wanted was the stone; they'd no use in the world for his body. But there's a lot more in it than that. They want the Professor himself.

It's a dead sure thing that where that big stone came from there's a lot more, and they intend to make him show them the place."

"Ah," said Mr. Buxton, "there's a good deal in that, Risley. I hadn't thought of that."

"Then, Buck," cried Jack, "you think that my father has been seized and is being carried back to Burmah?"

"I'm as sure of it as I am that we are in this room," said Buck solemnly.

Jack drew a long breath of immense relief. To feel that his father might be alive, and possibly could be rescued, was to bring a bright gleam of hope into the darkness of this strange affair.

"How have they carried him away?" cried Jack.

"By sea," replied Buck. "Couldn't be done by land, nohow. But you can get a quiet road by sea easy enough. I wonder how much that boat that disappeared from the harbour had to do with it. They might have nailed him, pulled him out in it to a vessel waiting off the harbour, and then sent it adrift when they'd done with it."

Mr. Buxton had filled his pipe and was smoking thoughtfully. Now he took the pipe out of his mouth, and spoke.

"I can see another thing which, in the light now thrown upon the affair, seems very possible," said he. "How many letters did you receive from your father, Jack, when he was on his way home?"

"Only one, Mr. Buxton," replied Jack. "The one he sent me from Cairo was the first I had had from him for a long time."

"Isn't it possible," went on Mr. Buxton, "that those who were following him up knew of that letter being sent, and were anxious to read it, hoping that he would describe where he had been and what he had been doing? Then, even if they failed to secure him and the big stone, they would know the spot where he had discovered the ruby-mine."

"Say, Mr. Buxton, you've hit the bull's eye," remarked Buck. "That's about the square-toed truth."

"And that's why they threw the letter away when they had read it,"

cried Jack. "There was no hint of any such thing in it."

There was silence for a few moments, while all three pondered over the strange events which had taken place. It was broken by Jack.

"Oh, Buck," he said, "I suppose there is no chance of such a precious thing being in the baggage after all."

"Not it," replied Risley. "I packed every consarned thing with my own hands. I had just enough strength for a job like that."

"And you feel convinced, Risley, that Tom Haydon has been spirited off back to Burmah by a gang who have learned of his wonderful find, and mean to seize it for themselves?" said Mr. Buxton.

"Dead sure of it, sir," replied Buck.

Jack sprang to his feet and paced the room excitedly.

"Then we'll go ourselves, Buck," he cried, "and run them to earth."

"Sure thing," said Buck calmly. "I'm on at once for a look into what's happened to the Professor."

"It will be a dangerous quest," said Mr. Buxton slowly; "a very dangerous quest, among wild lands and savage peoples. I know that much. Do you think the Government authority extends over the district where the discovery was made, Risley?"

"No, it don't," replied Buck. "They're all savage Kachins and Shans up there, as ready for a sc.r.a.p as any you ever met. It's all the authorities can do to hold 'em off the settlements."

"A dangerous quest indeed!" repeated Mr. Buxton.

"But one that must be undertaken," cried Jack earnestly. "Would you have me leave my father's fate a matter of uncertainty, Mr. Buxton? I know very well it's a long journey on the chance of Buck being right in his suspicions. But so many things point that way, and if Buck is willing to guide me to the country where the search ought to be made, I will gladly go."

"Oh, I'm with you, of course, Jack," sang out Buck Risley. "We'll have a look into things, anyhow, an' I know more than a bit of that country. I've been three times up the river, an' made all sorts o'

little side-trips."

"Thank you, Buck," cried the lad. "I knew you'd be willing to help me.

We'll start as soon as possible. You'll find us plenty of funds, won't you, Mr. Buxton?"

"Oh, yes, Jack," said Mr. Buxton, "I'll find you all the money you want for such a purpose."

CHAPTER V.

THE SPY.

Three days later, about four o'clock in the afternoon, Jack and Buck walked into Lincoln's Inn, and knocked at Mr. Buxton's door. They had been staying at a hotel near at hand, and nothing was said until Jack had carefully closed the door of the inner sitting-room, where Mr.

Buxton was at work among his papers.

"So you're off to-morrow?" said Mr. Buxton, laying down his pen.

"No, to-night," said Jack.

"What?" returned Mr. Buxton in surprise. "Have you got all your luggage ready?"

"Yes, sir," said Buck. "We've got it with us."

"Oh, your cab is outside?" he said.

"No, sir," replied Buck, with a twinkle in his eye. "You see it all on view."

Mr. Buxton scratched his head. "Do you mean to say that you're going to start for Burmah with an umbrella apiece?"

"We do, Mr. Buxton," replied Jack. "We're going to slip off quietly.

Buck thinks we're being watched."

"Watched!" cried Mr. Buxton. "By whom?"

"Can't say that," said Buck. "But there's someone takin' a deep interest in us I feel certain. I should venture to spec'late as the ruby gang want to know what we're up to."