mission to do so. Do you consent to this request?"
"Of course I pledge my word to it," said I, somewhat amazed; and I extended my right hand to grasp his. But he placed my hand gently on his forehead and his own right hand on my breast, which is the custom amongst this race in all matters of promise or verbal obligations. Then turning to his daughter, he said, " And you, Zee, will not repeat to any one what the stranger has said, or may say, to me or to you, of a world other than our own." Zee rose and kissed her father on the temples, saying, with a smile, "A Gy's tongue is wanton, but love can fetter it fast. And if, my father, you fear lest a chance word from me or yourself could expose our community to danger, by a desire to explore a world beyond us, will not a wave of the vril, properly impelled, wash even the memory of what we have heard the stranger say out of the tablets of the brain."
"What is vril?" I asked.
Therewith Zee began to enter into an explanation of which I understood very little, for there is
