his father had done in Asia; far to the south and west the country was to be subject to the Persians. The campaign against Napata led to the conquest of that kingdom. By maintaining this conquest, the supremacy of Persia over Egypt was rendered secure from attacks on that side, and the negro tribes to the south of Napata were kept in obedience, though previously they had been visited by the Pharaohs only in flying incursions. It was at Napata that, according to the tradition preserved by Diodorus, Strabo, and Josephus, Cambyses lost his sister, and with her the hope of an heir, by his own brutal violence, as the songs represent, when his sister reminded him of the death of his brother. But Strabo and Diodorus observe, as has been shown above, that he named the city after his sister "to honour her." No doubt the disquiet of his conscience increased the longer he remained without children. What was to become of the kingdom after his death? The brother, whom he had killed, had only left a daughter.[198] Burdened with new anxiety, if not with new guilt, he turned back from Napata. The disaster, which befell the army at Premnis, and the failure of the expedition against the oasis of Sivah, though it did not involve the loss of 50,000 men, might seem to him proofs that he had brought upon himself the anger of Auramazda and Mithra. Then the Phenicians refused to march against the Carthaginians, and he was unable to compel them. The absence of any heir, the misfortunes which had fallen upon him, increased his inward torments. He became more distrustful, passionate, and savage. He may have sought forgetfulness in wine, but the remedy only increased his violence. He shrank from seeing again his home and the desolate house of Cyrus, and remained inactive and irresolute for a year and a half in Egypt; in spite of the danger which attached to the absence of the ruler of so vast a kingdom.