Jackson, Thomas Graham, Sir, 1835-1924 · Cambridge, University Press · leaf 61
iousmanner (Fig. 8 b), by laying the courses of bricksvertically instead of horizontally, so that the vault con-sisted of a series of rings or arches side by side, of whichthe joints and not the beds radiated from the centre.More than this, the rings were not exactly vertical, butinclined… … Fig. 8. and so by being keyed became secure. It is in this waythat the granaries of Rameses II at Thebes are con-structed, and also the galleries at Khorsabad. The samemethod is adopted in the Palace of Ctesiphon, built byChosroes II about a.d. 550, where the enormous barrelvault of the central…
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