"I smell a strange Tarmangani," chattered Nkima. "There is a Tarmangani with them. The Tarmangani are worse than the Gomangani. They come with thundersticks and kill little Nkima and all his brothers and sisters. They kill the Mangani. They kill the Gomangani. They kill everything with their thundersticks. Nkima does not like the Tarmangani. Nkima is afraid."

To Nkima, as to the other denizens of the jungle, Tarzan was no Tarmangani, no white man. He was of the jungle. He was one of them, and if they thought of him as being anything other than just Tarzan it was as a Mangani, a great ape, that they classified him.

The advance of the strangers was now plainly audible to everyone in the camp. The Waziri warriors glanced into the jungle in the direction from which the sounds were coming and then back to Tarzan and Muviro, but when they saw that their leaders were not concerned they went quietly on with their cooking.

A tall, black warrior was the first of the party to come within sight of the camp. When he saw the Waziri he halted and an instant later a bearded white man stopped beside him.

For an instant the white man surveyed the camp and then he came forward, making the sign of peace. Out of the jungle a dozen or more blacks followed him. Most of them were porters, there being but three or four rifles in evidence.

Tarzan and the Waziri realized at once that it was a small and harmless party, and even Nkima, who had retreated to the safety of a near-by tree, showed his contempt by scampering fearlessly back to climb to the shoulder of his master.

"Doctor von Harben!" exclaimed Tarzan, as the bearded stranger approached. "I scarcely recognized you at first."

"God has been kind to me, Tarzan of the Apes," said von Harben, extending his hand. "I was on my way to see you and I have found you a full two days' march sooner than I expected."

"We are after a cattle-killer," explained Tarzan. "He has come into our kraal several nights of late and killed some of our best cattle, but he is very cunning. I think he must be an old lion to outwit Tarzan for so long.

"But what brings you into Tarzan's country, Doctor? I hope it is only a neighborly visit and that no trouble has come to my good friend, though your appearance belies my hope."