"I'm employing it most judiciously, selling it in very small quantities, and of course not a grain is ever smoked or consumed in any way upon these premises. That's thoroughly understood by every one, and you need not have the slightest doubt but that the secret will be rigidly kept. At present the men frequenting the house are nearly all of the upper coolie class. That is to say, they are the gardeners, stokers of the power house, sweepers, and so forth. But, quite recently a better class of man has made his appearance. There's a young, semi-Europeanized electrician who has been once or twice. Moreover, I have gained a great point. I have become acquainted with Kwang-su, the keeper of the inclosure gate."

"That's certainly something," I replied, recalling the figure of the gigantic Chinaman in question, which was familiar to most of the residents beneath the wall. "He's a ferocious-looking brute."

"At one time he was headsman of Yangtsun, and they say a most finished expert with the sword," Rolston remarked with a grin. "All I know about him is that he'd sell his soul for the black smoke, and regards me as a most valuable addition to the neighborhood. In a fortnight or so, I am pretty certain I shall be able to pass in and out of the grounds pretty much as I like, and then a great move in our game will have been accomplished. As an undoubted Chinaman and as a confidential purveyer of opium, I shall soon have complete freedom below the towers."

"But what about the great prizefighter, Mulligan?"

"He has nothing to do with the park, as they call all the grounds around the towers. Now that the building is finished his functions are up in the air, and I gather that he lives on the third stage, just beneath the City itself, as a sort of watch-dog. The Asiatics are entirely managed by their own leaders, appointed by Morse himself."

It was as Bill predicted. In a very short space of time he was away from the "Golden Swan" as much as he was in it, and every day he gathered more and more information about the tower and its mistress—information which was carefully noted down in the silence of the night, so that no detail should be forgotten.

Of course the fact that my hotel had become a haunt of the yellow men neither escaped the notice of the neighbors, nor of the police. The former were easily dealt with, and especially my patrons. Mr. Mogridge, having invented "Ting-A-Ling-A-Ling," was disposed to look upon the "Chinks" with genial patronage, and his self-importance was gratified by the low bows with which they always greeted him as they passed to their club-room above. The lead of Mr. Mogridge was followed by others in the saloon bar, and Sliddim tactfully kept everything running smoothly. As for the police, they paid me one visit or two, were shown everything and were perfectly satisfied that the house was being conducted with propriety—as indeed it was.

The yellow men neither gambled nor got drunk, that was perfectly obvious. There was never a suspicion of opium from first to last, nor was there a single instance of a brawl or a fight. Indeed the local police-inspector, an excellent fellow with whom I had many a talk, expressed himself as being both surprised and delighted at the way in which I had the aliens in hand.

Nearly two months had gone by, and I was curbing the raging fires of impatience and longing as well as I could when two incidents occurred which greatly precipitated action.

Rolston came to me one day in a state of great excitement.