Without further words my friend climbed around on to the ladder and commenced to descend. I waited until his head disappeared below the level, and, clumsily enough, prepared to follow him.

The hulk at that moment giving an unusually heavy heave, I stumbled, and for one breathless moment looked down upon the glittering surface streaking the darkness beneath me. My foot had slipped, and but that I had a firm grip upon the top rung, that instant, most probably, had marked the end of my share in the fight with Fu-Manchu. As it was I had a narrow escape. I felt something slip from my hip pocket, but the weird creaking of the ladder, the groans of the laboring hulk, and the lapping of the waves about the staging drowned the sound of the splash as my revolver dropped into the river.

Rather white-faced, I think, I joined Smith on the deck. He had witnessed my accident, but—

"We must risk it," he whispered in my ear. "We dare not turn back now."

He plunged into the semi-darkness, making for the cabin, I perforce following.

At the bottom of the ladder we came fully into the light streaming out from the singular apartments at the entrance to which we found ourselves. It was fitted up as a laboratory. A glimpse I had of shelves loaded with jars and bottles, of a table strewn with scientific paraphernalia, with retorts, with tubes of extraordinary shapes, holding living organisms, and with instruments—some of them of a form unknown to my experience. I saw too that books, papers and rolls of parchment littered the bare wooden floor. Then Smith's voice rose above the confused sounds about me, incisive, commanding:

"I have you covered, Dr. Fu-Manchu!"

For Fu-Manchu sat at the table.

The picture that he presented at that moment is one which persistently clings in my memory. In his long, yellow robe, his masklike, intellectual face bent forward amongst the riot of singular objects upon the table, his great, high brow gleaming in the light of the shaded lamp above him, and with the abnormal eyes, filmed and green, raised to us, he seemed a figure from the realms of delirium. But, most amazing circumstance of all, he and his surroundings tallied, almost identically, with the dream-picture which had come to me as I lay chained in the cell!

Some of the large jars about the place held anatomy specimens. A faint smell of opium hung in the air, and playing with the tassel of one of the cushions upon which, as upon a divan, Fu-Manchu was seated, leaped and chattered a little marmoset.