Wyzinski stood looking at her. It seemed like a dream; but then there was the stoppered bottle of white powder in his hand to prove the reality. All that day, all that night, the missionary watched by the bedside. Towards midnight a heavy thunderstorm passed over the plains watered by the Zambesi. The air seemed blue with the forked lightning; the thunder rattled and roared over the fort, but the morning dawned calm and beautiful, and a cool breeze blew in at the open windows, bringing with it the sweet breath of the tamarind flowers. The quinine, too, had done its work; and the crisis which in the dreadful tertian fever of the Zambesi always occurs on the third day, had passed over favourably. These storms are of frequent occurrence in the land through which the Zambesi rolls its waters, and scarcely a week goes by without the thunder making itself heard round the dilapidated walls of Senna. Another of these periodical storms had just occurred, sweeping over the land, accompanied by torrents of rain, cooling the air, and refreshing the parched-up plains on the banks of the Zambesi. The river was high in consequence, rolling down branches and trees and quantities of driftwood past the brick walls of the crumbling fort. It has already been said that several small islands intersect the course of the river; and near one of these, not a stone's throw from the water-gate, two boats were moored, swinging to the stream. The one a large European-looking pinnace--though really built on the Zambesi after an English model--possessed a covered cabin aft, and was capable of holding some twenty people. The other was of smaller and lighter mould. From the island came the sounds of laughter and conversation.