"Then there was something at your window, too?"

"Something? A dozen! They were monkeying with the sashes and panes all night long, and I imagined that I could hear them breathing--as though from effort of intense eagerness. Ouch! I came as near losing my nerve as I care to. I came within an ace of hurling those cursed pies through the window at them. I'd bolt to-day if I wasn't afraid to play the coward."

"Most people are brave for that reason," she said.

The dog, who had slept under my bunk, and who had contributed to my entertainment by sighing and moaning all night, now appeared ready for business--business in his case being the operation of feeding. I presented him with a concentrated tablet, which he cautiously investigated and then rolled on.

"Nice testimonial for the people who concocted it," I said, in disgust. "I wish I had an egg."

"There are some concentrated egg tablets in the shanty," said Miss Barrison; but the idea was not attractive.

"I refuse to fry a pill for breakfast," I said, sullenly, and set the coffee-pot on the coals.

In spite of the dewy beauty of the morning, breakfast was not a cheerful function. Professor Farrago appeared, clad in sun-helmet and khaki. I had seldom seen him depressed; but he was now, and his very efforts to disguise it only emphasized his visible anxiety.

His preparations for the day, too, had an ominous aspect to me. He gave his orders and we obeyed, instinctively suppressing questions.

First, he and I transported all personal luggage of the company to the big electric launch--Miss Barrison's effects, his, and my own. His private papers, the stenographic reports, and all memoranda were tied up together and carried aboard.

Then, to my surprise, two weeks' concentrated rations for two and mineral water sufficient for the same period were stowed away aboard the launch. Several times he asked me whether I knew how to run the boat, and I a.s.sured him that I did.

In a short time nothing was left ash.o.r.e except the bare furnishings of the cabin, the female wearing-apparel, the steel cage and chemicals which I had brought, and the twelve apple-pies--the latter under lock and key in my room.

As the preparations came to an end, the professor's gentle melancholy seemed to deepen. Once I ventured to ask him if he was indisposed, and he replied that he had never felt in better physical condition.

Presently he bade me fetch the pies; and I brought them, and, at a sign from him, placed them inside the steel cage, closing and locking the door.

"I believe," he said, glancing from Miss Barrison to me, and from me to the dog--"I believe that we are ready to start."

He went to the cabin and locked the door on the outside, pocketing the key.

Then he backed up to the steel cage, stooped and lifted his end as I lifted mine, and together we started off through the forest, bearing the cage between us as porters carry a heavy piece of luggage.

Miss Barrison came next, carrying the trousseau, the tank, hose, and chemicals; and the dog followed her--probably not from affection for us, but because he was afraid to be left alone.

We walked in silence, the professor and I keeping an instinctive lookout for snakes; but we encountered nothing of that sort. On every side, touching our shoulders, crowded the closely woven and impenetrable tangle of the jungle; and we threaded it along a narrow path which he, no doubt, had cut, for the machete marks were still fresh, and the blazes on hickory, live-oak, and palm were all wet with dripping sap, and swarming with eager, brilliant b.u.t.terflies.

At times across our course flowed shallow, rapid streams of water, clear as crystal, and most alluring to the thirsty.

"There's fever in every drop," said the professor, as I mentioned my thirst; "take the bottled water if you mean to stay a little longer."

"Stay where?" I asked.

"On earth," he replied, tersely; and we marched on.

The beauty of the tropics is marred somewhat for me; under all the fresh splendor of color death lurks in brilliant tints. Where painted fruit hangs temptingly, where great, silky blossoms exhale alluring scent, where the elaps coils inlaid with scarlet, black, and saffron, where in the shadow of a palmetto frond a succession of velvety black diamonds mark the rattler's swollen length, there death is; and his invisible consort, horror, creeps where the snake whose mouth is lined with white creeps--where the tarantula squats, hairy, motionless; where a bit of living enamel fringed with orange undulates along a mossy log.

Thinking of these things, and watchful lest, unawares, terror unfold from some blossoming and leafy covert, I scarcely noticed the beauty of the glade we had entered--a long oval, cross-barred with sunshine which fell on hedges of scrub-palmetto, chin high, interlaced with golden blossoms of the jasmine. And all around, like pillars supporting a high green canopy above a throne, towered the silvery stems of palms fretted with pale, rose-tinted lichens and hung with draperies of grape-vine.

"This is the place," said Professor Farrago.

His quiet, pa.s.sionless voice sounded strange to me; his words seemed strange, too, each one heavily weighted with hidden meaning.

We set the cage on the ground; he unlocked and opened the steel-barred door, and, kneeling, carefully arranged the pies along the centre of the cage.

"I have a curious presentiment," he said, "that I shall not come out of this experiment unscathed."

"Don't, for Heaven's sake, say that!" I broke out, my nerves on edge again.

"Why not?" he asked, surprised. "I am not afraid."

"Not afraid to die?" I demanded, exasperated.

"Who spoke of dying?" he inquired, mildly. "What I said was that I do not expect to come out of this affair unscathed."

I did not comprehend his meaning, but I understood the reproof conveyed.

He closed and locked the cage door again and came towards us, balancing the key across the palm of his hand.

Miss Barrison had seated herself on the leaves; I stood back as the professor sat down beside her; then, at a gesture from him, took the place he indicated on his left.

"Before we begin," he said, calmly, "there are several things you ought to know and which I have not yet told you. The first concerns the feminine wearing apparel which Mr. Gilland brought me."

He turned to Miss Barrison and asked her whether she had brought a complete outfit, and she opened the bundle on her knees and handed it to him.

"I cannot," he said, "delicately explain in so many words what use I expect to make of this apparel. Nor do I yet know whether I shall have any use at all for it. That can only be a theoretical speculation until, within a few more hours, my theory is proven or disproven--and,"

he said, suddenly turning on me, "my theory concerning these invisible creatures is the most extraordinary and audacious theory ever entertained by man since Columbus presumed that there must lie somewhere a hidden continent which n.o.body had ever seen."

He pa.s.sed his hand over his protruding forehead, lost for a moment in deepest reflection. Then, "Have you ever heard of the Sphyx?" he asked.

"It seems to me that Ponce de Leon wrote of something--" I began, hesitating.

"Yes, the famous lines in the third volume which have set so many wise men guessing. You recall them:

"'_And there, alas! within sound of the Fountain of Youth whose waters tint the skin till the whole body glows softly like the petal of a rose--there, alas! in the new world already blooming_, THE ETERNAL ENIGMA _I beheld, in the flesh living; yet it faded even as I looked, although I swear it lived and breathed. This is the Sphyx_.'"

A silence; then I said, "Those lines are meaningless to me."

"Not to me," said Miss Barrison, softly.

The professor looked at her. "Ah, child! Ever subtler, ever surer--the Eternal Enigma is no enigma to you."

"What is the Sphyx?" I asked.

"Have you read De Soto? Or Goya?"

"Yes, both. I remember now that De Soto records the Syachas legend of the Sphyx--something about a G.o.ddess--"

"Not a G.o.ddess," said Miss Barrison, her lips touched with a smile.