had multiple exostoses or bony tumors. At one end of the room was a large case of skulls, all deformed or asymmetrical; at the other stood a long table and a chest of shallow drawers; while the remaining long side of the room was filled from end to end by a glass case about eight feet high containing a number of human skeletons, each neatly articulated and standing on its own pedestal.

Now, this long case had always been somewhat of a mystery to me. Its contents differed from the other specimens in two respects. First, whereas all the other skeletons and the skulls bore full descriptive labels, these human skeletons were distinguished merely by a number and a date on the pedestal; and, second, whereas all the other specimens illustrated some disease or deformity, these were, apparently, quite normal or showed only some trifling abnormality. They were beautifully prepared and bleached to ivory whiteness, but otherwise they were of no interest, and I could never understand Challoner's object in accumulating such a number of duplicate specimens.

"You think you know this collection inside out," said Challoner, as if reading my thoughts.

"I know it pretty well, I think," was my reply.

"You don't know it at all," he rejoined.

"Oh, come!" I said. "I could write a catalogue of it from memory."

Challoner laughed. "My dear fellow," said he, "you have never seen the real gems of the collection. I am going to show them to you now."

He passed his arm through mine and we walked slowly up the long room; and as we went, he glanced in at the skeletons in the great case with a faint and very horrible smile on his bloated face. At the extreme end I stopped him and pointed to the last skeleton in the case.

"I want you to explain to me, Challoner, why you have distinguished this one by a different pedestal from the others."

As I spoke, I ran my eye along the row of gaunt shapes that filled the great case. Each skeleton stood on a pedestal of ebonized wood on which was a number and a date painted in white, excepting the end one, the pedestal of which was coated with scarlet enamel and the number and date on it in gold lettering.

"That specimen," said Challoner, thoughtfully, "is the last of the flock. It made the collection complete. So I marked it with a distinctive pedestal. You will understand all about it when you take over. Now come and look at my gems."

He walked behind the chest of drawers and stood facing the wall which was covered with mahogany paneling. Each panel was about four feet wide by five high, was bordered by a row of carved rosettes and was separated from the adjoining panels by pilasters.

"Now, watch me, Wharton," said he. "You see these two rosettes near the bottom of the panel. You press your thumbs on them, so; and you give a half turn. That turns a catch. Then you do this." He grasped the pilaster on each side of the panel, gave a gentle pull, and panel and pilasters came away bodily, exposing a moderate-sized cupboard. I hastily relieved him of the panel, and, when he had recovered his breath, he began to expound the contents of this curious hiding-place.

"That row of books you will take possession of and examine when my lease falls in. You are my executor and this collection will be yours to keep or give away or destroy, as you think fit. The books consist of a finger-print album, a portrait album, a catalogue and a history of the collection. You will find them all quite interesting. Now I will show you the gems if you will lift those boxes down on to the table."

I did as he asked; lifting down the pile of shallow boxes and placing them, at his direction, side by side on the table. When they were arranged to his satisfaction, he took off the lids with somewhat of a flourish, and I uttered an exclamation of amazement.

The boxes were filled with dolls' heads; at least, such I took them to be. But such dolls! I had never seen anything like them before. So horribly realistic and yet so unnatural! I can only describe the impression they produced by that much-misused word "weird." They were uncanny in the extreme, suggesting to the beholder the severed heads of a company of fantastic, grotesque-looking dwarfs. Let me try to describe them in detail.

Each head was about the size of a small monkey's, that is, about four inches long. It appeared to be made of some fine leather or vellum, remarkably like human skin in texture. The hair in all of them was disproportionately long and very thick, so that it looked somewhat like a paint-brush. But it was undoubtedly human hair. The eyebrows too were unnaturally thick and long and so were the mustache and beard, when present; being composed, as I could plainly see, of genuine mustache and beard hairs of full length and very closely set. Some were made to represent clean-shaven men, and some even showed two or three days' growth of stubble; which stubble was disproportionately long and most unnaturally dense. The eyes of all were closed and the eyelashes formed a thick, projecting brush. But despite the abnormal treatment of the hairy parts, these little heads had the most astonishingly realistic appearance and were, as I have said, excessively weird and rather dreadful in aspect. And, in spite of the closed eyes and set features, each had an expression and character of its own; each, in fact, seemed to be a faithful and spirited portrait of a definite individual. They were upwards of twenty in number, all male and all represented persons of the European type. Each reposed in a little velvet-lined compartment and each was distinguished by a label bearing a number and a date.

I looked up at Challoner and found him regarding me with an inscrutable and hideous smile.

"These are very extraordinary productions, Challoner," said I. "What are they? And what are they made of?"

"Made of, my dear fellow?" said he. "Why, the same as you and I are made of, to be sure."

"Do you mean to say," I exclaimed, "that these little heads are made of human skin?"

"Undoubtedly. Human skin and human hair. What else did you think?"

I looked at him with a puzzled frown and finally said that I did not understand what he meant.

"Have you never heard of the Mundurucú Indians?" he asked.

I shook my head. "What about them?" I asked.

"You will find an account of them in Bates' "Naturalist on the Amazon," and there is a reference to them in Gould and Pyle's "Anomalies.""

There was a pause, during which I gazed, not without awe, at the open boxes. Finally I looked at Challoner and asked, "Well?"

"Well, these are examples of the Mundurucú work."

I looked again at the boxes and I must confess that, as my eye traveled along the rows of impassive faces and noted the perfect though diminutive features, the tiny ears, the bristling hair, the frowning eye-brows—so discordant with the placid expression and peacefully closed eyes—a chill of horror crept over me. The whole thing was so unreal, so unnatural, so suggestive of some diabolical wizardry. I looked up sharply at my host.

"Where did you get these things, Challoner?" I asked.

His bloated face exhibited again that strange, inscrutable smile.

"You will find a full account of them in the archives of the museum. Every specimen is fully described there and the history of its acquirement and origin given in detail. They are interesting little objects, aren't they?"

"Very," I replied abstractedly; for I was speculating at the moment on the disagreement between the appearance of the heads and their implied origin. Finally I pointed out the discrepancy.

"But these heads were never prepared by those Indians you speak of."

"Why not?"

"Because they are all Europeans; in fact, most of them look like Englishmen."

"Well? And what about it?" Challoner seemed quietly amused at my perplexity, but at this moment my eye noted a further detail which—I cannot exactly say why—seemed to send a fresh shiver down my spine.

"Look here, Challoner,"