The frescoes on the roof and tribune are by the Padre Pozzi. "Amid the many distinguished men whom the Jesuits sent forth to every region of the world, I cannot recollect the name of a single artist unless it be the Father Pozzi, renowned for his skill in perspective, and who used his skill less as an artist than a conjuror, to produce such illusions as make the vulgar stare; to make the impalpable to the grasp appear as palpable to the vision; the near seem distant, the distant near; the unreal, real; to cheat the eye; to dazzle the sense;--all this has Father Pozzi most cunningly achieved in the Gesù and the Sant' Ignazio at Rome; but nothing more, and nothing better than this. I wearied of his altar-pieces and of his wonderful roofs which pretend to be no roofs at all. Scheme, tricks, and deceptions in art should all be kept for the theatre. It appeared to me nothing less than profane to introduce _shams_ into the temples of God."--_Mrs. Jameson._ On the left of the Corso--opposite the handsome Palazzo Simonetti--is the _Church of S. Marcello_ (Pope, 308--10), containing some interesting modern monuments. Among them are those of Pierre Gilles, the traveller (ob. 1555), and of the English Cardinal Weld. Here, also, Cardinal Gonsalvi, the famous and liberal minister of Pius VII., is buried in the same tomb with his beloved younger brother, the Marchese Andrea Gonsalvi. Their monument, by Rinaldi, tells that here repose the bodies of two brothers-- "Qui cum singulari amore dum vivebant Se mutuo dilexissent Corpora etiam sua Una eademque urna condi voluere." Here are the masterpieces which made the reputation of Pierino del Vaga (1501--1547). In the chapel of the Virgin are the cherubs, whose graceful movements and exquisite flesh-tints Vasari declares to have been unsurpassed by any artist in fresco. In the chapel of the Crucifix is the Creation of Eve, which is even more beautiful. "The perfectly beautiful figure of the naked Adam is seen lying, overpowered by sleep, while Eve, filled with life, and with folded hands, rises to receive the blessing of her Maker,--a most grand and solemn figure standing erect in heavy drapery."--_Vasari_, iv. This church is said to occupy the site of a house of the Christian matron Lucina, in which Marcellus died of wounds incurred in attempting to settle a quarrel among his Christian followers. It was in front of it that the body of the tribune Rienzi, after his murder on the Capitol steps, was hung up by the feet for two days as a mark for the rabble to throw stones at.