THE PAULINE CHAPEL
was erected by Paul III. Its walls are painted in fresco, the conversion of S. Paul and the execution of S. Peter being by Michael Angelo. The painted roof and the portraits of twenty-eight Popes are by Lorenzo Sabatini and Frederigo Zucchero.
Retracing our steps through the Sistine Chapel, and going up a narrow stair, we enter, through a small white door, two rooms containing