To explain such a process, what could be clearer than the words Pliny uses? We do not need to warp a word from its ordinary significance. Lysistratus made portraits in plaster from life, and improved them by color laid on to the model. He thus made realistic, exact resemblances, whereas before him artists had sought only to make heads as beautiful as possible. What, then, were the “effigies de signis” that he made? We have already seen that the term “effigies” had a significance of reality and absolute imitation, and corresponded in great measure to the English word effigy, meaning colored effigies with real dresses,—like those of Madame Tussaud, for instance. The “imagines” and “ceræ” of the ancient Romans were very much like them; and does not Pliny mean to say that Lysistratus copied marble or brass statues, or pictures, and made these effigies from them, coloring them so as to add to the likeness, and clothing them with real draperies? and that this so grew into vogue that thenceforward there were no statues which were not thus copied in plaster or “argilla”?—using the term “argilla,” or white clay, as equivalent to gypsum, with which possibly the plaster was mixed. As “argilla” was the foundation with which the ancient panels were prepared for painting, this would seem most appropriate in such case. Such would be the figures alluded to by Lucian, or by Lexiphanes when he says, “If you cull the flower of all these various beauties, you will in your eloquence be like those makers of figures in wax and clay [or argilla] in the Forum, colored outside with minium and blue, and inside only fragile clay.” According to this interpretation of the passage in Pliny, it not only becomes intelligible as a whole, but is consistent and without contradiction; whereas, if we suppose that he meant to indicate the process of casting in plaster, his statements are not only entirely obscure and inconsecutive, but ignorant and contradictory. II. In the previous chapter we have critically considered the text of Pliny bearing upon the question whether the ancient Greeks and Romans were acquainted with the art of casting. Let us now proceed to some general considerations as to the probability that this art was known and practiced by them.