Under the arch that stood opposite to the principal entrance of the choir, on the base that ran right round, on the outer side, Baccio had placed, directly under the centre of that arch, the Tree of the Fall, round the trunk of which was wound the Ancient Serpent with a human face, and two nude figures were about the Tree, one being Adam and the other Eve. On the outer side of the choir, to which those figures had their faces turned, there ran lengthways along the base a space about three braccia long, which was to contain the story of their Creation, either in marble or in bronze; and this was to be pursued along the faces of the base of the whole work, to the number of twenty-one stories, all from the Old Testament. And for the further enrichment of this base he had made for each of the socles upon which stood the columns and pilasters, a figure of some Prophet, either draped or nude, to be afterwards executed in marble--a great work, truly, and a marvellous opportunity, likely to reveal all the art and genius of a perfect master, whose memory should never be extinguished by any lapse of time. This model was shown to the Duke, and also a double series of designs made by Baccio, which, both from their variety and their number, and likewise from their beauty--for the reason that Baccio worked boldly in wax and drew very well--pleased his Excellency, and he ordained that the masonry-work should be straightway taken in hand, devoting to it all the expenditure administered by the Office of Works, and giving orders that a great quantity of marble should be brought from Carrara.