Above them, in the darkness, the silent figure of the ape-man lay stretched at ease upon a great branch, his keen ears absorbing all that passed between them, while curled in sleep upon his bronzed back lay little Nkima, entirely oblivious of the fact that he might have listened to words well calculated to shake the foundations of organized government throughout the world.
"And where," demanded Colt, "if it is no secret, does Comrade Zveri expect to find such a great store of gold?"
"In the famous treasure vaults of Opar," replied the girl. "You certainly have heard of them."
"Yes," answered Colt, "but I never considered them other than purely legendary. The folklore of the entire world is filled with these mythical treasure vaults."
"But Opar is no myth," replied Zora.
If the startling information divulged to him affected Tarzan, it induced no outward manifestation. Listening in silence imperturbable, trained to the utmost refinement of self-control, he might have been part and parcel of the great branch upon which he lay, or of the shadowy foliage which hid him from view.
For a time Colt sat in silence, contemplating the stupendous possibilities of the plan that he had just heard unfolded. It seemed to him little short of the dream of a mad man, and he did not believe that it had the slightest chance for success. What he did realize was the jeopardy in which it placed the members of the expedition, for he believed that there would be no escape for any of them once Great Britain, France, and Italy were apprised of their activities; and, without conscious volition, his fears seemed centered upon the safety of the girl. He knew the type of people with whom he was working and so he knew that it would be dangerous to voice a doubt as to the practicability of the plan, for scarcely without exception the agitators whom he had met had fallen naturally into two separate categories, the impractical visionary, who believed everything that he wanted to believe, and the shrewd knave, actuated by motives of avarice, who hoped to profit either in power or riches by any change that he might be instrumental in bringing about in the established order of things. It seemed horrible that a young and beautiful girl should have been enticed into such a desperate situation. She seemed far too intelligent to be merely a brainless tool, and even his brief association with her made it most difficult for him to believe that she was a knave.
"The undertaking is certainly fraught with grave dangers," he said, "and as it is primarily a job for men I cannot understand why you were permitted to face the dangers and hardships that must of necessity be entailed by the carrying out of such a perilous campaign."
"The life of a woman is of no more value than that of a man," she declared, "and I was needed. There is always a great deal of important and confidential clerical work to be done which Comrade Zveri can entrust only to one in whom he has implicit confidence. He reposes such trust in me and, in addition, I am a trained typist and stenographer. Those reasons in themselves are sufficient to explain why I am here, but another very important one is that I desire to be with Comrade Zveri."
In the girl's words Colt saw the admission of a romance; but to his American mind this was all the greater reason why the girl should not have been brought along, for he could not conceive of a man exposing the girl he loved to such dangers.