"Nonsense!" said Romero. "The purpose of that mysterious voice from the air is just as obvious as is the fact that it is the voice of a man. It is the voice of some one who wanted to defeat the purposes of this expedition, and I imagine Zveri guessed close to the truth yesterday when he attributed it to English or Italian sources that were endeavoring to delay us until they could mobilize a sufficient force against us."

"Which proves," declared Zveri, "what I have suspected for a long time; that there is more than one traitor among us," and he looked meaningly at Romero.

"What it means," said Romero, "is that crazy, hare-brained theories always fail when they are put to the test. You thought that all the blacks in Africa would rush to your standard and drive all the foreigners into the ocean. In theory, perhaps, you were right, but in practice one man, with a knowledge of native psychology which you did not have, burst your entire dream like a bubble, and for every other hare-brained theory in the world there is always a stumbling block of fact."

"You talk like a traitor to the cause," said Ivitch threateningly.

"And what are you going to do about it?" demanded the Mexican. "I am fed up with all of you and your whole rotten, selfish plan. There isn't an honest hair in your head nor in Zveri's. I can accord Tony and Señorita Drinov the benefit of a doubt, for I cannot conceive either of them as knaves. As I was deluded, so may they have been deluded, as you and your kind have striven for years to delude countless millions of others."

"You are not the first traitor to the cause," cried Zveri, "nor will you be the first traitor to pay the penalty of his treason."

"That is not a good way to talk now," said Mori. "We are not already too many. If we fight and kill one another, perhaps none of us will come out of Africa alive. But if you kill Miguel, you will have to kill me, too, and perhaps you will not be successful. Perhaps it is you who will be killed."

"Tony is right," said the girl. "Let us call a truce until we reach civilization." And so it was that under something of the nature of an armed truce, the five set forth the following morning on the back trail toward their base camp; while upon another trail, a full day ahead of them, Tarzan and his Waziri warriors took a short cut for Opar.

"La may not be there," Tarzan explained to Muviro, "but I intend to punish Oah and Dooth for their treachery and thus make it possible for the high priestess to return in safety, if she still lives."

"But how about the white enemies in the jungle back of us, Bwana?" asked Muviro.