up with rubble and débris. The shortest of these was the western, leading to Tlacopan, half a league distant, and bordered all the way with houses. They were wide enough for ten horsemen to ride abreast, and were provided at intervals with bridges for the free flow of water3 and of traffic. Near their junction with the city were drawbridges, and breastworks for defence. A fourth causeway, from the Chapultepec summer palace, served to support the aqueduct which carried water from the mountain spring in that vicinity.
Round the southern part of the city stretched a semicircular levee, three leagues in length and thirty feet in breadth, which had been constructed in the middle of the preceding century to protect the place from the torrents which after heavy rains came rushing from the fresh-water lakes of Xochimilco and Chalco.
This levee was the chief resort of the people—during the day for bustling merchants and boat crews, during the evening for promenaders, who came to breathe the fresh air soft-blown from the lake, and to watch the setting sun as it gilded the summits of Popocatepetl and his consort.
Traffic, as may be supposed, was conducted chiefly by canals guarded by custom-houses, lined with quays, and provided in some places with docks.
Upon these abutted narrow yet well lighted cross streets, connected by bridges, and leading to a number of open squares, the largest of which were the market-places in Tlatelulco and Mexico proper, wherein as many as one hundred thousand people are said to have found room.
Viewed architecturally and singly, the buildings did not present a very imposing appearance, the greater portion being but one story in height. This monotony, however, was relieved to a great extent by the number of temples sacred to superior and local deities which were to be seen in every ward, raised high above the dwellings of mortals, on mounds of varying