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76 Byzantine structural scheme. The entablature which is carried around the whole interior at the springing of the vaults, has to do duty at once for the small order of the upper stage



and for the great angle pilasters, and thus in so far as it is in good proportion for the one it cannot be so for the other. Then the true magnitudes of the piers and the pendentive arches are falsified by the pilasters and simulated archivolts which spring from them. These piers and arches really embrace in width