Then Juag exposed himself to the view of the bull—it is a part of the tactics of the hunt—while I stepped to one side behind a bush. The moment that the savage beast saw Juag he charged him. Juag ran straight away, that the bull might be lured past my hiding-place. On he came—tons of mighty bestial strength and rage. Dian had slipped behind me. She, too, could fight a thag should emergency require. Ah, such a girl! A rightful empress of a stone age by every standard which two worlds might bring to measure her! Crashing down toward us came the bull thag, bellowing and snorting, with the power of a hundred outer-earthly bulls. When he was opposite me I sprang for the heavy mane that covered his huge neck. To tangle my fingers in it was the work of but an instant. Then I was running along at the beast’s shoulder. Now, the theory upon which this hunting custom is based is one long ago discovered by experience, and that is that a thag cannot be turned from his charge once he has started toward the object of his wrath, so long as he can still see the thing he charges. He evidently believes that the man clinging to his mane is attempting to restrain him from overtaking his prey, and so he pays no attention to this enemy, who, of course, does not retard the mighty charge in the least. Once in the gait of the plunging bull, it was but a slight matter to vault to his back, as cavalrymen mount their chargers upon the run. Juag was still running in plain sight ahead of the bull. His speed was but a trifle less than that of the monster that pursued him. These Pellucidarians are almost as fleet as deer; because I am not is one reason that I am always chosen for the close-in work of the thag-hunt. I could not keep in front of a charging thag long enough to give the killer time to do his work. I learned that the first—and last—time I tried it. Once astride the bull’s neck, I drew my long stone knife and, setting the point carefully over the brute’s spine, drove it home with both hands. At the same instant I leaped clear of the stumbling animal. Now, no vertebrate can progress far with a knife through his spine, and the thag is no exception to the rule. The fellow was down instantly. As he wallowed Juag returned, and the two of us leaped in when an opening afforded the opportunity and snatched our javelins from his side. Then we danced about him, more like two savages than anything else, until we got the opening we were looking for, when simultaneously, our javelins pierced his wild heart, stilling it forever.