These strange facts would never have been placed on record, nor would this exciting chapter of an eventful life have been written, except for two reasons: first, because the discovery I made has been declared to be of considerable importance to scientists, bibliophiles, and the world at large; and, secondly, because it is my dear wife’s wish that in order to clear her in the eyes of both friends and foes nothing should be concealed, misrepresented, or withheld.It was, indeed, a memorable day when I halted before the white, almost windowless house of the prior of San Sisto and knocked twice at its plain, green-painted door. The sun-blanched, time-mellowed city of Florence lay silent, glaring, and deserted in the blazing noon of a July day. The Florentines had fled to the mountains for air. The persiennes, or sun-shutters, were everywhere closed, the shops shut, the people slumbering, and the silence only broken by the heat-song of the chirping cicale in the scorched trees at the end of the Lung Arno.