The movement took place at precisely the right instant, and both the javelin and arrow whizzed over his head, without grazing him, but the arrow shot by Long’s temple so close that he blinked and for an instant believed he had been hit.

But, like the hunter when bitten by a rattlesnake, he determined to crush his assailant and to attend to his hurt afterwards.

The sharp crack of the Winchester, the shriek of the smitten savage and his frenzied leap in the air, followed in such instant succession that they seemed simultaneous.  When the wretch went back on the ground he was as dead as Julius Caesar.

A man can fire with amazing rapidity, when using a Winchester repeater, but some persons are like cats in their own movements.  The New Englander leveled his weapon as quickly as he could bring it to his shoulder, but the native along the side of the Xingu had vanished as though he never existed.

Whether he knew anything about fire-arms or not, he was quick to understand that some kind of weapon in the hands of the white men had knocked the bowman out of time, and he bounded among the trees at his side, as though he, too, was discharged from the bow.  He was just quick enough to escape the bullet that would have been after him an instant later.

The moment Grimcke knew that he was safe from the javelin, which sped over his head, he straightened up, and, still maintaining his removable posture, discharged his gun at the point whence came the well-nigh fatal missile.

But the shot was a blind one, for he did not see the native at the instant of firing.  Nothing could have surpassed the alertness of these strange savages.  The one with the javelin disappeared with the same suddenness as did his brother down the bank, and, had the archer but comprehended his danger he, too, would have escaped.

The affray roused the wrath of both Long and Grimcke.  They had offered the hand of friendship, only to be answered with an attempt upon their lives.  One of their assailants had eluded them, and the other would have been an assailant had the opportunity been given.

“Let’s shoot him too!”

He alluded to the man who hurled the javelin and who, so far as they could see, was left without any weapon with which to defend himself.  In their natural excitement over their victory, the friends forgot themselves for the moment.  Heedless of consequences, they dashed among the trees, in pursuit of the savage who had flung his spear with well-nigh fatal effect.

The undergrowth was frightfully tangled, and, as the first plunge, the Professor went forward on his hands and knees.  The wonder was how Long kept his feet; but it will be remembered that he was much more attenuated than his companion, and seemed to have picked up a skill elsewhere which now stood him well.

The moon was shining and despite the dense vegetation around him, enough rays found their way to the ground to give him a partial view for few paces in front.  He had not gone far when he caught a glimpse of the dusky figure slipping through the undergrowth ahead, and at no great distance.