a fortnight by one of the best forgers in Luxor. I have no doubt that the ancient Egyptians worked in precisely the same way, and mastered the hardest stones by the use of iron. Practice soon taught them methods by which their labour might be lightened, and their tools made to yield results as delicate and subtle as those which we achieve with our own. As soon as the learner knew how to manage the point and the mallet, his master set him to copy a series of graduated models representing an animal in various stages of completion, or a part of the human body, or the whole human body, from the first rough sketch to the finished design (fig. 182). Every year, these models are found in sufficient number to establish examples of progressive series. Apart from isolated specimens which are picked up everywhere, the Gizeh collection contains a set of fifteen from Sakkarah, forty-one from Tanis, and a dozen from Thebes and Medinet Habû. They were intended partly for the study of bas-reliefs, partly for the study of sculpture proper; and they reveal the method in use for both.[37] [Illustration: Fig. 182.--Sculptor's trial-piece, Eighteenth Dynasty.] The Egyptians treated bas-relief in three ways: either as a simple engraving executed by means of incised lines; or by cutting away the surface of the stone round the figure, and so causing it to stand out in relief upon the wall; or by sinking the design below the wall-surface and cutting it in relief at the bottom of the hollow. The first method has the advantage of being expeditious, and the disadvantage of not being sufficiently decorative. Rameses III. made use of it in certain parts of his temple at Medinet Habû; but, as a rule, it was preferred for stelae and small monuments. The last-named method lessened not only the danger of damage to the work, but the labour of the workman. It evaded the dressing down of the background, which was a distinct economy of time, and it left no projecting work on the surface of the walls, the design being thus sheltered from accidental blows. The intermediate process was, however, generally adopted, and appears to have been taught in the schools by preference. The models were little rectangular tablets, squared off in order that the scholar might enlarge or reduce the scale of his subject without departing from the traditional proportions. Some of these models are wrought on both sides; but the greater number are sculptured on one side only. Sometimes the design represents a bull; sometimes the head of a cynocephalous ape, of a ram, of a lion, of a divinity. Occasionally, we find the subject in duplicate, side by side, being roughly blocked out to the left, and highly finished to the right. In no instance does the relief exceed a quarter of an inch, and it is generally even less. Not but that the Egyptians sometimes cut boldly into the stone. At Medinet Habû and Karnak--on the higher parts of these temples, where the work is in granite