The earliest extant miniatures are a series of colored drawings or miniatures cut from the Ambrosian Iliad, an illustrated manuscript of the "Iliad" from the 3rd century. They are similar in style and treatment with the pictorial art of the later Roman classical period. In these pictures there is a considerable variety in the quality of the drawing, but there are many notable instances of fine figure-drawing, quite classical in sentiment, showing that the earlier art still exercised its influence. Such indications, too, of landscape as are to be found are of the classical type, not conventional in the sense of medieval conventionalism, but still attempting to follow nature, even if in an imperfect fashion; just as in the Pompeian and other frescoes of the Roman age.