In my observations on Gothic Architecture, published in the Sixteenth Volume of the Archaeologia, I ventured to express my belief that the rules and principles of it might be recovered by a patient examination of the numerous buildings in that style still remaining. And I also remarked, that the Mysterious Figure, which seems to have been called Vesica Piscis, had a great influence upon the forms of all sorts of things, which were intended for sacred uses; after the establishment of Christianity.