e the roof of
this underground city, and by means of lenses and reflectors transmit
the sunlight, softened and diffused, to dispel what would otherwise be
Cimmerian darkness. In like manner air is introduced.

Perry and I were taken, with Ghak, to a large public building, where
one of the Sagoths who had formed our guard explained to a Maharan
official the circumstances surrounding our capture. The method of
communication between these two was remarkable in that no spoken words
were exchanged. They employed a species of sign language. As I was to
learn later, the Mahars have no ears, not any spoken language. Among
themselves they communicate by means of what Perry says must be a sixth
sense which is cognizant of a fourth dimension.

I never did quite grasp him, though he endeavored to explain it to me
upon numerous occasions. I suggested telepathy, but he said no, that
it was not telepathy since they could only communicate when in each
others' presence, nor could they talk with the Sagoths or the other
inhabitants of Pellucidar by the same method they used to converse with
one another.

"What they do," said Perry, "is to project their thoughts into the
fourth dimension, when they become appreciable to the sixth sense of
their listener. Do I make myself quite clear?"

"You do not, Perry," I replied. He shook his head in despair, and
returned to his work. They had set us to carrying a great accumulation
of Maharan literature from one apartment to another, and there
arranging it upon shelves. I suggested to Perry that we were in the
public library of Phutra, but later, as he commenced to discover the
key to their written language, he assured me that we were handling the
ancient archives of the race.

During this period my thoughts were continually upon Dian the
Beautiful. I was, of course, glad that she had escaped the Mahars, and
the fate that had been suggested by the Sagoth who had threatened to
purchase her upon our arrival at Phutra. I often wondered if the
little party of fugitives had been overtaken by the guards who had
returned to search for them. Sometimes I was not so sure but that I
should have been more contented to know that Dian was here in Phutra,
than to think of her at the mercy of Hooja the Sly One. Ghak, Perry,
and I often talked together of possible escape, but the Sarian was so
steeped in his lifelong belief that no one could escape from the Mahars
except by a miracle, that he was