Morelli,[20] in appealing to the internal testimony of the frescoes in the Sixtine Chapel, tells us it was their landscape backgrounds which first opened his eyes. He further cites the overcrowding in the composition--"a fault which Pintoricchio very often commits, Perugino hardly ever." Even the falcon in the air is repeated by Pintoricchio in his frescoes at Siena. The children he compares with those in the chapel in Ara Cœli. He sees the character of the master plainly stamped on many of the individual figures, and on the plan of the composition. Evidence more minute and conclusive is derived from the book of drawings to which I have already alluded. Towards the middle of the nineteenth century these, on the authority of Professor Bossi, were assigned to Raphael. Bossi bought the book at a sale, and deciding that they were studies by the great Urbinate, was full of elation at the acquisition of such a priceless treasure. When at Bossi's death they were bought by the nation, Passavant, Count Cicognara, and Marchese Estense, all noted connoisseurs, unhesitatingly pronounced them to be by Raphael, and for his work they still pass in the Accademia in Venice. [20] _Italian Masters in German Galleries_, pp. 264-284. It would take far too much space to go with Morelli through all the fifty-three drawings, with a circumstantial criticism which leaves only three (detached and on different paper) to the younger master. We must content ourselves with examining those which Pintoricchio used for figures in frescoes which remain to us. A number of these examples occur in "The Journey of Moses." On one sheet is a sketch for the woman kneeling with outstretched arms, who performs the rite upon the little son of Moses. On another page is a study for the drapery of the seated woman. Again, the heads of four women are drawn on one sheet; no less than three of these are introduced in the fresco. One of the two upper heads is used for the woman bearing a jar, the position being very slightly altered; while of the two lower heads, that on the left is a study for Zipporah leading her child, the other for the head of the woman with the child upon her knee. The quaint head-dresses are reproduced to a nicety: one with outstanding bows on either side, and the loose, flying scarf, knotted in front, the other with the scrolled cornucopia-like ornament curling round the ear. For "The Baptism" we have a study of the seated woman in the background, and for two of the nude figures of youths. For Perugino's fresco, "The Giving of the Keys," Pintoricchio has left two drawings for St. John, standing with his hand upon his breast; one of the two is ruled in squares for transferring to the wall, and this is the one adopted by Perugino. From two other studies figures have been introduced; the cloaked man, third from the left, and two just above, in the background. There is also an elaborate drawing for the Madonna in the altar-piece in Santa Maria del Popolo,