Professor Archimedes Q. Porter adjusted his spectacles.

"Ah, yes, indeed; yes indeed--most remarkable, most remarkable!" said the professor; "but I can add nothing further to what I have already remarked in elucidation of this truly momentous occurrence," and the professor turned slowly in the direction of the jungle.

"But, papa," cried the girl, "you haven't said anything about it yet."

"Tut, tut, child; tut, tut," responded Professor Porter, in a kindly and indulgent tone, "do not trouble your pretty head with such weighty and abstruse problems," and again he wandered slowly off in still another direction, his eyes bent upon the ground at his feet, his hands clasped behind him beneath the flowing tails of his coat.

"I reckon the daffy old bounder don't know no more'n we do about it,"

growled the rat-faced sailor.

"Keep a civil tongue in your head," cried the young man, his face paling in anger, at the insulting tone of the sailor. "You've murdered our officers and robbed us. We are absolutely in your power, but you'll treat Professor Porter and Miss Porter with respect or I'll break that vile neck of yours with my bare hands--guns or no guns," and the young fellow stepped so close to the rat-faced sailor that the latter, though he bore two revolvers and a villainous looking knife in his belt, slunk back abashed.

"You d.a.m.ned coward," cried the young man. "You'd never dare shoot a man until his back was turned. You don't dare shoot me even then," and he deliberately turned his back full upon the sailor and walked nonchalantly away as if to put him to the test.

The sailor's hand crept slyly to the b.u.t.t of one of his revolvers; his wicked eyes glared vengefully at the retreating form of the young Englishman. The gaze of his fellows was upon him, but still he hesitated. At heart he was even a greater coward than Mr. William Cecil Clayton had imagined.

Two keen eyes had watched every move of the party from the foliage of a nearby tree. Tarzan had seen the surprise caused by his notice, and while he could understand nothing of the spoken language of these strange people their gestures and facial expressions told him much.

The act of the little rat-faced sailor in killing one of his comrades had aroused a strong dislike in Tarzan, and now that he saw him quarreling with the fine-looking young man his animosity was still further stirred.

Tarzan had never seen the effects of a firearm before, though his books had taught him something of them, but when he saw the rat-faced one fingering the b.u.t.t of his revolver he thought of the scene he had witnessed so short a time before, and naturally expected to see the young man murdered as had been the huge sailor earlier in the day.

So Tarzan fitted a poisoned arrow to his bow and drew a bead upon the rat-faced sailor, but the foliage was so thick that he soon saw the arrow would be deflected by the leaves or some small branch, and instead he launched a heavy spear from his lofty perch.

Clayton had taken but a dozen steps. The rat-faced sailor had half drawn his revolver; the other sailors stood watching the scene intently.

Professor Porter had already disappeared into the jungle, whither he was being followed by the fussy Samuel T. Philander, his secretary and a.s.sistant.

Esmeralda, the Negress, was busy sorting her mistress' baggage from the pile of bales and boxes beside the cabin, and Miss Porter had turned away to follow Clayton, when something caused her to turn again toward the sailor.

And then three things happened almost simultaneously. The sailor jerked out his weapon and leveled it at Clayton's back, Miss Porter screamed a warning, and a long, metal-shod spear shot like a bolt from above and pa.s.sed entirely through the right shoulder of the rat-faced man.

The revolver exploded harmlessly in the air, and the seaman crumpled up with a scream of pain and terror.

Clayton turned and rushed back toward the scene. The sailors stood in a frightened group, with drawn weapons, peering into the jungle. The wounded man writhed and shrieked upon the ground.

Clayton, unseen by any, picked up the fallen revolver and slipped it inside his shirt, then he joined the sailors in gazing, mystified, into the jungle.

"Who could it have been?" whispered Jane Porter, and the young man turned to see her standing, wide-eyed and wondering, close beside him.

"I dare say Tarzan of the Apes is watching us all right," he answered, in a dubious tone. "I wonder, now, who that spear was intended for.

If for Snipes, then our ape friend is a friend indeed.

"By jove, where are your father and Mr. Philander? There's someone or something in that jungle, and it's armed, whatever it is. Ho!

Professor! Mr. Philander!" young Clayton shouted. There was no response.

"What's to be done, Miss Porter?" continued the young man, his face clouded by a frown of worry and indecision.

"I can't leave you here alone with these cutthroats, and you certainly can't venture into the jungle with me; yet someone must go in search of your father. He is more than apt to wandering off aimlessly, regardless of danger or direction, and Mr. Philander is only a trifle less impractical than he. You will pardon my bluntness, but our lives are all in jeopardy here, and when we get your father back something must be done to impress upon him the dangers to which he exposes you as well as himself by his absent-mindedness."

"I quite agree with you," replied the girl, "and I am not offended at all. Dear old papa would sacrifice his life for me without an instant's hesitation, provided one could keep his mind on so frivolous a matter for an entire instant. There is only one way to keep him in safety, and that is to chain him to a tree. The poor dear is SO impractical."

"I have it!" suddenly exclaimed Clayton. "You can use a revolver, can't you?"

"Yes. Why?"

"I have one. With it you and Esmeralda will be comparatively safe in this cabin while I am searching for your father and Mr. Philander.

Come, call the woman and I will hurry on. They can't have gone far."

Jane did as he suggested and when he saw the door close safely behind them Clayton turned toward the jungle.

Some of the sailors were drawing the spear from their wounded comrade and, as Clayton approached, he asked if he could borrow a revolver from one of them while he searched the jungle for the professor.

The rat-faced one, finding he was not dead, had regained his composure, and with a volley of oaths directed at Clayton refused in the name of his fellows to allow the young man any firearms.

This man, Snipes, had a.s.sumed the role of chief since he had killed their former leader, and so little time had elapsed that none of his companions had as yet questioned his authority.

Clayton's only response was a shrug of the shoulders, but as he left them he picked up the spear which had transfixed Snipes, and thus primitively armed, the son of the then Lord Greystoke strode into the dense jungle.

Every few moments he called aloud the names of the wanderers. The watchers in the cabin by the beach heard the sound of his voice growing ever fainter and fainter, until at last it was swallowed up by the myriad noises of the primeval wood.

When Professor Archimedes Q. Porter and his a.s.sistant, Samuel T.

Philander, after much insistence on the part of the latter, had finally turned their steps toward camp, they were as completely lost in the wild and tangled labyrinth of the matted jungle as two human beings well could be, though they did not know it.

It was by the merest caprice of fortune that they headed toward the west coast of Africa, instead of toward Zanzibar on the opposite side of the dark continent.

When in a short time they reached the beach, only to find no camp in sight, Philander was positive that they were north of their proper destination, while, as a matter of fact they were about two hundred yards south of it.

It never occurred to either of these impractical theorists to call aloud on the chance of attracting their friends' attention. Instead, with all the a.s.surance that deductive reasoning from a wrong premise induces in one, Mr. Samuel T. Philander grasped Professor Archimedes Q.

Porter firmly by the arm and hurried the weakly protesting old gentleman off in the direction of Cape Town, fifteen hundred miles to the south.

When Jane and Esmeralda found themselves safely behind the cabin door the Negress's first thought was to barricade the portal from the inside. With this idea in mind she turned to search for some means of putting it into execution; but her first view of the interior of the cabin brought a shriek of terror to her lips, and like a frightened child the huge woman ran to bury her face on her mistress' shoulder.

Jane, turning at the cry, saw the cause of it lying p.r.o.ne upon the floor before them--the whitened skeleton of a man. A further glance revealed a second skeleton upon the bed.

"What horrible place are we in?" murmured the awe-struck girl. But there was no panic in her fright.

At last, disengaging herself from the frantic clutch of the still shrieking Esmeralda, Jane crossed the room to look into the little cradle, knowing what she should see there even before the tiny skeleton disclosed itself in all its pitiful and pathetic frailty.

What an awful tragedy these poor mute bones proclaimed! The girl shuddered at thought of the eventualities which might lie before herself and her friends in this ill-fated cabin, the haunt of mysterious, perhaps hostile, beings.

Quickly, with an impatient stamp of her little foot, she endeavored to shake off the gloomy forebodings, and turning to Esmeralda bade her cease her wailing.

"Stop, Esmeralda, stop it this minute!" she cried. "You are only making it worse."

She ended lamely, a little quiver in her own voice as she thought of the three men, upon whom she depended for protection, wandering in the depth of that awful forest.

Soon the girl found that the door was equipped with a heavy wooden bar upon the inside, and after several efforts the combined strength of the two enabled them to slip it into place, the first time in twenty years.