(Protogenes' Ialysus and his Dog). But as there was no limit to the discovery of fresh beauties in that work, so in the opinion of Lomazzo it happens with the perfections of Vinci's paintings, including even those which Vasari and others allude to as left imperfect." Lanzi says it is certain that he left some of his works only half finished. "Such is his Epiphany, in the Ducal Gallery at Florence, and his Holy Family, in the Archbishop's palace at Milan." Others he finished in the most exquisite manner. "He was not satisfied with only perfecting the heads, counterfeiting the shining of the eyes, the pores of the skin, the roots of the hair, and even the beating of the arteries; but he likewise portrayed each separate garment, and every accessory, with equal minuteness. Thus in his landscapes, also, there was not a single herb, or leaf of a tree, which he had not taken, like a portrait, from the face of nature; and even to his very leaves he gave a peculiar air, fold, and position best adapted to represent their rustling in the wind. While he bestowed his attention in this manner to minutiæ, he at the same time, as is observed by Mengs, led the way to a more enlarged and dignified style; entered into the most abstruse inquiries as to the source and nature of expression—the most philosophical and elevated branch of the art—and smoothed the way for the appearance of Raffaelle." Vinci spent four years on his portrait of Mona Lisa Giocondo.
