Along the river-banks in the northern suburbs of the city lie the scattered ruins of an ancient fortification of the Spanish government, when it held domination over the territory; and one circular structure of stone, called "Roy's Tower," now occupied as a dwelling, yet remains entire. There is also an {86} old castle of stone in tolerable preservation, surrounded by a wall of the same material.[76] Some of these venerable relics of former time--alas! for the irreverence of the age--have been converted into limekilns, and into lime itself, for aught that is known to the contrary! The waterworks, General Ashley's beautiful residence, and that series of ancient mounds for which St. Louis is famous, were next passed in succession, while upon the right stretched out the long low outline of "Blood Island" in the middle of the stream.[77] For several miles above the city, as we proceeded up the river, pleasant villas, with their white walls and cultivated grounds, were caught from time to time by the eye, glancing through the green foliage far in the interior. It was a glorious day. Silvery cloudlets were floating along the upper sky like spiritual creations, and a fresh breeze was rippling the waters: along the banks stood out the huge spectral Titans of the forest, heaving aloft their naked limbs like monuments of "time departed," while beneath reposed the humble hut and clearing of the settler. It was nearly midday, after leaving St. Louis, that we reached the embouchure of the Missouri. Twenty miles before attaining that point, the confluent streams flow along in two distinct currents upon either shore, the one white, clayey, and troubled, the other a deep blue. The river sweeps along, indeed, in two distinct streams past the city of St. Louis, upon either side of Blood Island, nor does it unite its heterogeneous floods for many miles below. At intervals, as the huge mass rolls itself {87} along, vast whirls and swells of turbid water burst out upon the surface, producing an aspect not unlike the sea in a gusty day, mottled by the shadows of scudding clouds. Charlevoix,[78] the chronicler of the early French explorations in North America, with reference to this giant confluence, more than a century since thus writes: "I believe this is the finest confluence in the world. The two rivers are much of the same breadth, each about half a league, but the Missouri is by far the most rapid, and seems to enter the Mississippi like a conqueror, through which it carries its white waves to the opposite shore without mixing them. Afterward it gives its colour to the Mississippi, which it never loses again, but carries quite down to the sea." This account, with all due consideration for the venerable historian, accords not precisely with the scene of the confluence at the present day, at least not as it has appeared to myself. The Missouri, indeed, rolls in its heavy volume with the impetuosity and bearing of a "conqueror" upon the tranquil