. A history of art in ancient Egypt . Fig. 76.—Off-set .?emicircular arcli. of a vault, are really laid horizontally one upon another, and I 12 A History of Art in Ancient Egypt. their lateral joints are vertical. (Fig. 76.) When the unitsof such vaults are properly proportioned they are stable in themselves, and they haveno lateral thrust. 2. Centred vaults. Theseare true vaults. They are.

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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondo, bookyear1883