They arrived simultaneously but Tarzan was the only one of the party whose presence was unsuspected by the others, for, as always, he had moved silently and with the utmost wariness because of the unknown nature of the conditions he might discover.

As he looked down upon the scene below his quick eye and his knowledge of the jungle revealed at a glance the full story of the tragedy that had overtaken Bolgani, and then he saw Stimbol raise his rifle, intent upon bagging two royal specimens with a single shot.

In the heart of Tarzan was no great love for Bolgani the gorilla. Since childhood the shaggy, giant man-beast had been the natural foe of the ape-man. His first mortal combat had been with Bolgani. For years he had feared him, or rather avoided him through caution, for of fear Tarzan was ignorant; and since he had emerged from childhood he had continued to avoid Bolgani for the simple reason that his own people, the great apes, avoided him.

But now when he saw the huge brute beset by two of the natural enemies of both the Mangani and the Bolgani, there flared within his breast a sudden loyalty that burned away the personal prejudices of a lifetime.

He was directly above Stimbol, and with such celerity do the mind and muscles of the ape-man coordinate that even as the American raised his weapon to his shoulder Tarzan had dropped upon his back, felling him to the earth; and before Stimbol could discover what had happened to him, long before he could stumble, cursing, to his feet, Tarzan, who had been unarmed, had snatched the hunter's knife from its scabbard and leaped full upon the writhing, struggling mass of python and gorilla. Stimbol came to his feet ready to kill but what he saw before him temporarily drove the desire for vengeance from his mind.

Naked but for a loin cloth, bronzed, black-haired, a giant white man battled with the dread python; and as Stimbol watched he shuddered as he became aware that the low, beast-like growls he heard came not alone from the savage lips of the gorilla but from the throat of the god-like man-thing that fought for him.

Steel fingers encircled the python just back of its head, while those of the free hand drove Stimbol's hunting knife again and again into the coiling, writhing body of the serpent. With the projection of a new and more menacing enemy into the battle, Histah was forced partially to release his hold upon Bolgani with, at first, the intention of including Tarzan in the same embrace that he might crush them both at once; but soon he discovered that the hairless man-thing constituted a distinct menace to his life that would necessitate his undivided attention, and so he quickly uncoiled from about Bolgani and in a frenzy of rage and pain that whipped his great length into a lashing fury of destruction he sought to encircle the ape-man; but wheresoever his coils approached, the keen knife bit deep into tortured flesh.

Bolgani, the spark of life all but crushed from him, lay gasping upon the ground, unable to come to the aid of his preserver, while Stimbol, goggle-eyed with awe and terror, kept at a safe distance, momentarily forgetful both of his lust for trophies and his bent for revenge.

Thus was Tarzan pitted, single-handed, against one of the mightiest of Nature's creations in a duel to the death, the result of which seemed to the watching American already a foregone conclusion, for what man born of woman could hope, unaided, to escape from the embrace of the deadly coils of a python?

Already Histah had encircled the torso and one leg of the ape-man, but his powers of constriction, lessened by the frightful wounds he had received, had as yet been unable to crush his adversary into helplessness, and Tarzan was now concentrating his attention and the heavy blade of the hunting knife upon a single portion of the weakening body in an attempt to cut Histah in two.