The reception room was as neat as though it received the hourly attentions of a fussy housewife. It was cozily furnished, yet it was evident that the furniture had been made on the spot of rough wood and skins of various animals. Deep skin rugs covered the floor and walls. There were three doors giving off of the reception room, all three of which were closed.

"You are not married?" he asked the two.

"No!" snapped Bentley.

"That center door leads to your room, Bentley. The one next to it is for the young lady. The other door? Ah, the other door my friends!

That door you must never open. But to make sure that curiosity does not overcome caution, let me show you!"

They followed him to the door. He swung it open.

Both visitors started back and a gasp of terror burst from the lips of Ellen Estabrook. Beads of perspiration burst forth on Bentley.

They saw a huge room. In one corner was a bed. The other held a great cage--and in the cage was an anthropoid ape larger even than the great brute they had met on the trail!

Barter laughed. He stepped into the room, uncoiled his whip and hurled the lash at the cage. A great bellowing roar fairly shook the house, while the brute tore at the bars which held him prisoner until the whole ma.s.sive cage seemed to dance. Barter laughed and continued to goad him.

"Barter," yelled Bentley, "stop that! If that beast should ever happen accidentally to get free he'd tear you to pieces!"

"I know," said Barter grimly, "and that's part of the experiment! Now we shall eat, and you, young lady, shall tell me what other fool scientists had to say about me after I disappeared--to escape their parrot-like repeating of my discoveries!"

Bentley started to offer protest as Barter began preparation for the meal, which obviously was to be taken in the room which held the cage of the giant anthropoid, but Ellen put her fingers to her lips and shook her head. Her eyes were dancing with excitement.

CHAPTER III

_A Night of Horror_

The meal consisted of various fruits, some meat which Bentley could not identify, and wild honey which was delicious. The bread tasted queer but was distinctly edible. The castaways ate ravenously, but even as he ate Bentley noticed that Ellen's face was chalky pale, and that in spite of a distinct effort of will she simply had to look at intervals toward the great beast in the cage.

Caleb Barter sat with his back to the animal. Bentley sat at the left of the old scientist, Ellen Estabrook at his right. The great beast was quiet now, but he squatted within his prison and his red-rimmed eyes swerved from one person to the other in the room with a peculiar intentness.

"I'd swear that beast can almost read our thoughts!" e.j.a.c.u.l.a.t.ed Bentley at last, after he had somewhat sated his appet.i.te.

Barter smiled with those too-red lips of his.

"He can--almost. You'd be surprised to know how nearly human the great apes are, and how nearly human this particular one is. Ah!"

"What do you mean, this particular one?" asked Bentley curiously. "He doesn't look any different to me from the others I've seen except that he is far and away the largest."

"I don't see why you should be so curious," said Barter testily. "It's none of your business you know--yet."

"What do you mean?" demanded Bentley, nettled by Barter's tone.

"Lee, hush," said Ellen. "Professor Barter is not on trial for any crime."

Bentley looked at her in hurt surprise, inclined to be angry with her for the tone she was taking, but he saw such a look of appeal in her eyes that he choked back the words that rushed to his lips for utterance. He was decidedly on edge, more, he felt, than he should have been despite what they had gone through. When their eyes met he saw her glance quickly toward the ape, and noted a frown of worry between her brows.

Bentley glanced at the ape. The brute now was staring at the girl in a way that made Bentley's flesh crawl. It was preposterous of course, but he had the feeling, something which seemed to flow out of that mighty cage like some evil emanation from a dank tarn, that the ape knew the girl's s.e.x--and that he desired her! It was horrible in the extreme to contemplate, yet Bentley knew when he glanced swiftly at the girl that she had sensed the same thing and was fighting to keep the natural horror she felt at such a ghastly thought from being noticeable. It was absurd. The ape was a prisoner. But....

"Professor Barter," said Bentley, "you're accustomed to being with this brute, but it isn't so nice for us, especially for Miss Estabrook."

Barter now frowned angrily.

"My dear Bentley," he said with that odd testiness which he had a.s.sumed toward Bentley before, "I refuse to have any interference with my experiment. This is part of it."

"You mean--" began Bentley.

"I mean that I'm training that ape--I call him Manape--to behave like human beings. How better can he learn than by watching our behavior?"

"Just the same," said Bentley, "I don't like it."

"It's all right, Lee," said Ellen quickly. "I don't mind."

But Bentley knew that it wasn't all right, and that she did mind, terribly.

Barter finished eating. Bentley had noticed that despite the long years he had been a virtual hermit, Barter ate as fastidiously as he probably had done when he had lived among his own kind. He pushed back his chair with a swift movement.

Instantly the roaring of Manape rang through the room. The great brute rose to his full height and grasped the bars of his cage, shaking them with savage fury. He glared at his master and b.e.s.t.i.a.l rage glittered from his red-rimmed eyes. He was a horrible sight. Ellen Estabrook, with no apology, stepped around the table and crouched wide-eyed in the arm of Lee Bentley.

"Lee," she said, "I'm terribly afraid. I almost wish we had trusted ourselves in the jungle."

"I'll look out for you," he whispered, as Barter turned his attention to the great ape.

But Bentley was watching the animal. So was Barter. The eyes of the scientist were shining like coals of fire. For the moment he appeared to have forgotten his guests.

"It is a success!" he cried. "As far as it goes, I mean!"

What did Barter mean? Seeking some answer to the enigma, Bentley studied the ape anew. Now he was positive of another thing: Manape was scarcely concerned with Barter, whom he appeared to hate with an utterly satanic hatred. His beady eyes were staring at Bentley instead!

"The brute is jealous of me!" thought Bentley. "Good G.o.d, what does it mean, anyway?"

Barter turned back to them and all at once became the genial host.

"Shall we return to the other room?" he asked politely.

It was a relief to the castaways to put that awful room behind them.

Barter closed and barred the door with deliberate slowness.

Why had this old man shut himself away from civilization like this?

How long had he held this great ape in captivity? What was the purpose of it? What experiment was he performing? What part of it had the castaways been witnessing that they had not recognized? Bentley, recalling the distinct impression that the ape had stared at Ellen almost with the eyes of a l.u.s.tful man, and had even appeared to be jealous of him because the girl had gone into his arms--Bentley felt a shiver of revulsion course through him as it struck him now how _human_ the regard and the jealousy of the creature had been!