It chanced that, as he ended his oration, a steamer, the first that had ever ploughed the Missouri river, fired a salute from a twelve-pounder gun, as she passed the Mandan village. To the Indians the roar of the cannon was like the voice of thunder, and their joy knew no bounds. The successful medicine-man was loaded with valuable gifts; mothers hastened to offer their daughters to him in marriage; and the elder medicine-men issued from the lodge, eager to enrol him in their order. But, from the roof of the lodge, where he had taken his stand, Wak-a-dah-ha-ku discovered the steamer, as she dashed up the river, and discharged her gun again and yet again. He hastened to address the chiefs and people, explaining that the sounds they heard were not those of thunder, but that his potent medicine had brought a thunder-boat to the village. To the river-bank rushed the wondering population, and the rest of the day was spent in a fever of excitement, in which the rain-maker was forgotten. Just before sunset his quick eyes discovered a black cloud, which, unobserved by the noisy multitude, swiftly came up from the horizon. At once he assumed his station on the roof of the lodge; strung his bow and made ready his arrow; arrested the attention of his fellows by his loud and exultant speech; and as the cloud impended over the village, shot his arrow into the sky. Lo, the rain immediately descended in torrents, wetting the rain-maker to the skin, but establishing in everybody’s mind a firm and deep conviction of his power. All night raged the storm; but unhappily a flash of lightning penetrated one of the wigwams, and killed a young girl. The newly-made medicine-man was sorely terrified by this catastrophe, which he feared the chiefs would impute to him, making him responsible for the girl’s death, and punishing him accordingly. But he was a man of much astuteness, and early in the morning, collecting three of his best horses, he mounted the lodge-roof again, and for a third time addressed the people of his tribe. “Friends,” he said, “my medicine was too strong, I am young, and I did not know where to stop. I did not regulate its power. And now the wigwam of Mah-sish is laid low, and many are the eyes that weep for Ko-ka, the antelope. Wak-a-dah-ha-ku gives three horses to rejoice the hearts of those who sorrow for Ko-ka. His medicine is great. His arrow pierced the black cloud, and the lightning came, and with it the thunder-boat. Who says that the medicine of Wak-a-dah-ha-ku is not strong?” This artful address was received with much favour, and thenceforward Wak-a-dah-ha-ku was known as the “Big Double Medicine.” Of the medical practices of these medicine-men Mr. Kane, in his “Wanderings of an Artist,” furnishes a striking illustration.