_I've grown a goitre by dwelling in this den-- As cats from stagnant streams in Lombardy, Or in what other land they hap to be-- Which drives the belly close beneath the chin: My beard turns up to heaven; my nape falls in, Fixed on my spine: my breast-bone visibly Grows like a harp: a rich embroidery Bedews my face from brush-drops thick and thin. My loins into my paunch like levers grind: My buttock like a crupper bears my weight; My feet unguided wander to and fro; In front my skin grows loose and long; behind, By bending it becomes more taut and strait; Crosswise I strain me like a Syrian bow: Whence false and quaint, I know, Must be the fruit of squinting brain and eye; For ill can aim the gun that bends awry. Come then, Giovanni, try To succour my dead pictures and my fame, Since foul I fare and painting is my shame._ CHAPTER VI I The Sistine Chapel was built in 1473 by Baccio Pontelli, a Florentine architect, for Pope Sixtus IV. It is a simple barn-like chamber, 132 feet in length, 44 in breadth, and 68 in height from the pavement. The ceiling consists of one expansive flattened vault, the central portion of which offers a large plane surface, well adapted to fresco decoration. The building is lighted by twelve windows, six upon each side of its length. These are placed high up, their rounded arches running parallel with the first spring of the vaulting. The ends of the chapel are closed by flat walls, against the western of which is raised the altar. When Michelangelo was called to paint here, he found both sides of the building, just below the windows, decorated in fresco by Perugino, Cosimo Rosselli, Sandro Botticelli, Luca Signorelli, and Domenico Ghirlandajo. These masters had depicted, in a series of twelve subjects, the history of Moses and the life of Jesus. Above the lines of fresco, in the spaces between the windows and along the eastern end at the same height, Botticelli painted a row of twenty-eight Popes. The spaces below the frescoed histories, down to the seats which ran along the pavement, were blank, waiting for the tapestries which Raffaello afterwards supplied from cartoons now in possession of the English Crown. At the west end, above the altar, shone three decorative frescoes by Perugino, representing the Assumption of the Virgin, between the finding of Moses and the Nativity. The two last of these pictures opened respectively the history of Moses and the life of Christ, so that the Old and New Testaments were equally illustrated upon the Chapel walls. At the opposite, or eastern end, Ghirlandajo painted the Resurrection, and there was a corresponding picture of Michael contending with Satan for the body of Moses.