Jackson, Thomas Graham, Sir, 1835-1924 · Cambridge [Eng.] University press · leaf 55
these roofing slabs. The thrust of the archesis encountered partly by bringing the springing forwardon interior piers, and partly by exterior buttresses,perhaps the earliest instance of their use. The whole ofthe masonry is put together without mortar. 1 op. cit, p. 7. 2 De Vogiid, p. 47 and Plates… … Fig. 4. The entrance doorway of the great hall that has beenjust described is square, with a complete entablature for I CH. Ill] SPALATO 3 its head and a round arch above, the lunette between thetwo being left open as a window. Additional height isgiven to this arch by making it a horseshoe instead…
