The construction of Lombard and Gothic vaults (1911)
Porter, Arthur Kingsley, 1883-1933 · New Haven : Yale university press; [etc., etc.] · leaf 34
be adduced, it is evident that economy of centering was a primaryconsideration with the builders of the transitional and Gothic periods. Theprinciple, it is true, was sometimes violated, especially in the outlying provinces;it was occasionally modified even in the Ile-de-France. But these…
