after a few words from my guide, who seemed to me to deprecate obstruction in our road, they fell back with a stately inclination of head, and resumed their own way with tranquil indifference. Midway in this thoroughfare we stopped at a building that differed from those we had hitherto passed, inasmuch as it formed three sides of a vast court, at the angles of which were lofty pyramidal towers; in the open space between the sides was a circular fountain of colossal dimensions, and throwing up a dazzling spray of what seemed to me fire. We entered the building through an open doorway and came into an enormous hall, in which were several groups of children, all apparently employed in work as at some great factory. There was a huge engine in the wall which was in full play, with wheels and cylinders resembling our own steam-engines, except that it was richly ornamented with precious stones and metals, and appeared to emanate a pale phosphorescent atmosphere of shifting light. Many of the children were at some mysterious work on this machinery, others were seated before tables. I was not
