country, has small openings left on purpose, so that the places where these intervals occur may serve for the light to come through. Thus far I imagine the building is not incapable of being described, even by a weak and feeble tongue. As the arches are arranged in quadrangular figure, the stonework between them takes the shape of a triangle, the lower angle of each triangle, being compressed where the arches unite, is slender, while the upper part becomes wider as it rises in the space between them, and ends against the circle which rests upon them, forming there its remaining angles. A spherical-shaped dome (θόλος) standing upon this circle makes it exceedingly beautiful; from the lightness of the building, it does not appear to rest upon a solid foundation, but to cover the place beneath as though it were suspended from heaven by the fabled golden chain. All these parts surprisingly joined to one another in the air, suspended one from another, and resting only on that which is next to them, form the work into one admirably harmonious whole, which spectators do not dwell upon for long in the mass, as each individual part attracts the eye to itself. The sight causes men constantly to change their point of view, and the spectator can nowhere point to any part which he admires more than the rest. Seeing the art which appears everywhere, men contract their eyebrows as they look at each part, and are unable to comprehend such workmanship, but always depart thence, stupefied, through their incapacity. So much for this. [Illustration: SKETCH PLAN OF S. SOPHIA AA. Outer Porch (Exo-narthex) a. Altar, now destroyed BB. Porch (narthex) bb. Seats for clergy CC. Space covered by central Dome cc. Iconostasis, or Screen DD. " " " Semi-domes d. Ambo or pulpit EE. " " " Supplementary semi-domes.] "The Emperor Justinian and the architects Anthemius and Isidorus used many devices to construct so lofty a church with security. One of these I will now explain, by which a man may form some opinion of the strength of the whole work; as for the others I am not able to discover them all, and find it impossible to describe them in words. It is as follows: The piers, of which I just now spoke, are not constructed in the same manner as the rest of the building, but in this fashion; they consist of quadrangular courses of stone, rough by nature, and made smooth by art; of these stones, those which make the projecting angles of the pier are cut angularly (ἐγγωνίων), while those which go in the middle parts of the sides are cut square (ἐν τετραπλεύρῳ). "They are fastened together not with lime (τίτανος), called 'unslaked' (ἄσβεστον), not with ashphaltum, the boast of Semiramis at Babylon, nor anything of the kind, but with lead, which, poured into the interstices, has sunk into the joints of the stones, and binds them together; this is how they are built.