John drew forward one of the prisoners, a tall young negro slightly wounded in the thigh.

"Dis Gamba, sah," John went on. "Him say Goruba pull him off horse, knock him boko, sah. Goruba get a horse, run away all same. Gamba berry mad; what for Goruba run away, not him? Him Tubu, Goruba no Tubu; make him berry mad, sah."

John did not explain himself very clearly; but, after questioning him patiently, Royce made out that when Gamba was about to ride away Goruba pulled him from the saddle, struck him on the head, and galloped away on his horse.

Gamba resented this. He had always disliked Goruba as a stranger who had wormed his way into the confidence of the Tubu chief, and whose rise to power had awakened the jealousy of many of the tribe. He blamed Goruba, too, for the misfortunes which had lately befallen the community, and had a personal grudge against him for appropriating his horse and preventing him from fleeing to safety.

"Which way did Goruba ride?" asked Royce.

Gamba explained that Goruba had ridden northwards towards the Yo, probably to fetch reinforcements large enough to crush the Englishmen's party.

"He has got a good start," said Royce to Challis. "but there's just a chance we may catch him if we go at once."

"Especially if this fellow will guide us," said Challis.

In spite of his wound, Gamba was eager to lead the chase of the man he hated. Accordingly, Royce and Challis mounted and, accompanied by the Tubu and their six Hausas, cantered away towards the north. John, much to his disappointment, was left behind in command of the men.

As they rode on, the Englishmen got more information from Gamba, Kalana interpreting. It turned out that he was a nephew of the childless chief of the Tubus, and had expected some day to succeed him, until Goruba appeared on the scene.