Their manner of construction was also the same, with the exception of the materials employed--each people using those most at hand in their respective countries--clay and bricks in Chaldea, stones in Yucatan. The filling in of the buildings being of inferior materials, crude or sun-dried bricks at Warka and Mugheir; of unhewn stones of all shapes and sizes, in Uxmal and Chichen, faced with walls of hewn stones, many feet in thickness throughout. Grand exterior staircases lead to the summit, where was the shrine of the god, and temple. In Yucatan these mounds are generally composed of seven superposed platforms, the one above being smaller than that immediately below; the temple or sanctuary containing invariably two chambers, the inner one, the Sanctum Sanctorum, being the smallest. In Babylon, the supposed tower of Babel--the _Birs-i-nimrud_--the temple of the seven lights, was made of seven stages or platforms. The roofs of these buildings in both countries were flat; the walls of vast thickness; the chambers long and narrow, with outer doors opening into them directly; the rooms ordinarily let into one another: squared recesses were common in the rooms. Mr. Loftus is of opinion that the chambers of the Chaldean buildings were usually arched with bricks, in which opinion Mr. Taylor concurs. We know that the ceilings of the chambers in all the monuments of Yucatan, without exception, form triangular arches. To describe their construction I will quote from the description by Herodotus, of some ceilings in Egyptian buildings and Scythian tombs, that resemble that of the brick vaults found at Mugheir. “The side walls slope outward as they ascend, the arch is formed by each successive layer of brick from the point where the arch begins, a little overlapping the last, till the two sides of the roof are brought so near together, that the aperture may be closed by a single brick.” Some of the sepulchers found in Yucatan are very similar to the jar tombs common at Mugheir. These consist of two large open-mouthed jars, united with bitumen after the body has been deposited in them, with the usual accompaniments of dishes, vases and ornaments, having an air hole bored at one extremity. Those found at Progreso were stone urns about three feet square, cemented in pairs, mouth to mouth, and having also an air hole bored in the bottom. Extensive mounds, made artificially of a vast number of coffins, arranged side by side, divided by thin walls of masonry crossing each other at right angles, to separate the coffins, have been found in the lower plains of Chaldea--such as exist along the coast of Peru, and in Yucatan. At Izamal many human remains, contained in urns, have been found in the mounds.