sentinels Tarzan tied Numa to a tree and continued on alone. He evaded a sentinel, passed the outguard and support and by devious ways came again to Colonel Capell's headquarters where he appeared before the officers gathered there as a disembodied spirit materializing out of thin air.
When they saw who it was that came thus unannounced they smiled and the colonel scratched his head in perplexity.
"Someone should be shot for this," he said. "I might just as well not establish an out-post if a man can filter through whenever he pleases."
Tarzan smiled. "Do not blame them," he said, "for I am not a man. I am a Tarmangani. Any Mangani who wished to, could enter your camp almost at will; but if you had them for sentinels no one could enter without their knowledge."
"What are the Mangani?" asked the colonel. "Perhaps we might enlist a bunch of the beggars."
Tarzan shook his head. "They are the great apes," he explained; "my people; but you could not use them. They cannot concentrate long enough upon a single idea. If I told them of this they would be much interested for a short time—I might even hold the interest of a few long enough to get them here and explain their duties to them; but soon they would lose interest and when you needed them most they might be off in the forest searching for beetles instead of watching their posts. They have the minds of little children—that is why they remain what they are."
