"Take word to your king," the ape-man directed him, "that Tarzan hears many diadets galloping toward Trohanadalmakus and that unless he is much mistaken each carries a hostile warrior upon its back." The sentinel turned and hallooed down the corridor leading from the entrance, and a moment later an officer and several other warriors appeared. At sight of Tarzan they halted. "What is wrong?" demanded the officer. "The King's Guest says that he heard many diadets approaching," replied the sentinel. "From what direction?" demanded the officer, addressing Tarzan. "From that direction the sounds appeared to come," replied the ape-man, pointing toward the west. "The Veltopismakusians!" exclaimed the officer, and then, turning to those who had accompanied him from the interior of the king's dome: "Quick! arouse Trohanadalmakus--I will warn the king's dome and the king," and he wheeled and ran quickly within, while the others sped away to awaken the city. In an incredibly short space of time Tarzan saw thousands of warriors streaming from each of the ten domes. From the north and the south doors of each dome rode mounted men, and from the east and west marched the foot soldiers. There was no confusion; everything moved with military precision and evidently in accordance with a plan of defense in which each unit had been thoroughly drilled. Small detachments of cavalry galloped quickly to the four points of the compass--these were scouts each detail of which spread fan-wise just beyond the limits of the domes until the city was encircled by a thin line of mounted men that would halt when it had reached a predetermined distance from the city, and fall back with information before an advancing enemy. Following these, stronger detachments of mounted men moved out to north and south and east and west to take positions just inside the line of scouts. These detachments were strong enough to engage the enemy and impede his progress as they fell back upon the main body of the cavalry which might by this plan be summoned in time to the point at which the enemy was making his boldest effort to reach the city. And then the main body of the cavalry moved out, and in this instance toward the west, from which point they were already assured the foe was approaching; while the infantry, which had not paused since it emerged from the domes, marched likewise toward the four points of the compass in four compact bodies of which by far the largest moved toward the west. The advance foot troops took their stations but a short distance outside the city, while within the area of the domes the last troops to emerge from them, both cavalry and infantry, remained evidently as a reserve force, and it was with these troops that Adendrohahkis took his post that he might be centrally located for the purpose of directing the defense of his city to better advantage.