this juncture hundreds of cauldrons were brought in which a crude asphaltum was heated until it became liquid and the interstices of the next six inch course were filled with it, bring­ing the entire completed course to the same level at a height of thirty inches, over all of which a second six inch course of rock and asphaltum was laid, and the second story laid out and completed in a similar manner.

The palace of Adendrohahkis, constructed in this way, was two hundred twenty feet in diameter, and one hundred ten feet high, with thirty-six floors capable of housing eighty thousand people, a veritable ant-hill of humanity. The city con­sisted of ten similar domes, though each slightly smaller than the king’s, housing a total of five hundred thousand people, two-thirds of whom were slaves; these being for the most part the artisans and body servants of the ruling class. Another half million slaves, the unskilled laborers of the city, dwelt in the subterranean chambers of the quarries from which the building material was obtained. The passageways and chambers of these mines were carefully shored and timbered as the work progressed, resulting in fairly com­modious and comfortable quarters for the slaves upon the upper levels at least, and as the city was built upon the surface of an ancient ground mo­raine, on account of the accessibility of building material, the drainage was perfect, the slaves suf-­