nd and rescue the great Thark I must expect
even more formidable obstacles before success could be mine. I had
entered the city from the south and now stood on the corner of the
avenue through which I had passed and the first intersecting avenue
south of the plaza. The buildings upon the south side of this square
did not appear to be inhabited, as I could see no lights, and so I
decided to gain the inner courtyard through one of them.

Nothing occurred to interrupt my progress through the deserted pile I
chose, and I came into the inner court close to the rear walls of the
east buildings without detection. Within the court a great herd of
thoats and zitidars moved restlessly about, cropping the moss-like
ochre vegetation which overgrows practically the entire uncultivated
area of Mars. What breeze there was came from the north-west, so there
was little danger that the beasts would scent me. Had they, their
squealing and grunting would have grown to such a volume as to attract
the attention of the warriors within the buildings.

Close to the east wall, beneath the overhanging balconies of the second
floors, I crept in dense shadows the full length of the courtyard,
until I came to the buildings at the north end. These were lighted for
about three floors up, but above the third floor all was dark.

To pass through the lighted rooms was, of course, out of the question,
since they swarmed with green Martian men and women. My only path lay
through the upper floors, and to gain these it was necessary to scale
the face of the wall. The reaching of the balcony of the second floor
was a matter of easy accomplishment--an agile leap gave my hands a
grasp upon the stone hand-rail above. In another instant I had drawn
myself upon the balcony.

Here through the open windows I saw the green folk squatting upon their
sleeping silks and furs, grunting an occasional monosyllable, which, in
connection with their wondrous telepathic powers, is ample for their
conversational requirements. As I drew closer to listen to their words
a warrior entered the room from the hall beyond.

"Come, Tan Gama," he cried, "we are to take the Thark before Kab Kadja.
Bring another with you."

The warrior addressed arose and, beckoning to a fellow squatting near,
the three turned and left the apartment.

If I could but follow them the chance might come to free Tars Tarkas at
once. At least I would learn the location of his prison.

At my r