A formidable rival to this magnificent fall of water has-been discovered by that indefatigable traveller, Dr. Livingston. It is called the Mosiotunya Falls, which are thus described:--"They occur," we read ("Outlines of Dr. Livingston's Missionary Journeys," p. 19), "in the most southerly part of the Zambese. Although previously unvisited by any European, Dr. Livingston had often heard of these smoke-resounding falls, which, with points of striking difference from Niagara, are, if possible, more remarkable and not less sublime than that noble cataract. He was therefore anxious to inspect them, and on the 20th of November, 1855, he reached Kalai, a place eight miles west of the Falls. On arriving at the latter, he found that this natural phenomenon was caused by the sudden contraction, or rather compression, of the river, here about 1000 yards broad, which urges its ponderous mass through a narrow rent in the basaltic rock of not more than twenty-five yards, and down a deep cleft, but a little wider, into a basin or trough about thirty yards in diameter, lying at a depth of thirty-five yards. Into this narrow receptacle the vast river precipitated itself. When Dr. Livingston visited the spot, the Zambese flowed through its narrowest channel, and its waters were at their lowest. The effect, however, of its sudden contraction and fall was in the highest degree sublime, and, from the point at which he surveyed it, appalling. For, not satisfied with a distant view of the opening through its rocky barrier, and of the columns of vapour rushing up for 300 to 400 feet, forming a spreading cloud, and then falling in perpetual rain, he engaged a native, with nerves as strong as his own and expert in the management of the canoe, to paddle him down the river, here heaving, eddying, and fretting, as if reluctant to approach the gorge and hurl itself down the precipice to an islet immediately above the fall, and from one point of which he could look over its edge into the foaming caldron below, mark the mad whirl of its waters, and stand in the very focus of its vapoury columns and its deafening roar. But unique and magnificent as was the cataract when Dr. Livingston beheld it, the reports of others, and the inference drawn by himself, satisfied him that the spectacle was tame compared with what occurs during the rainy season, when the river flows between banks many miles apart, and still forces its augmented waters through the same fissure into the same trough. At these times the columns of spray may be seen, and the sound heard ten or twelve miles distant."