The uses of clay among the Greeks were very varied and extensive. Sun-dried clay was used for building material, and we have already seen what an important part was played by pottery in their domestic and religious life. The uses of terracotta are almost more manifold than those of pottery. It supplied the most important parts both of public and private buildings, such as bricks, roof-tiles, drain-tiles, and various architectural adornments; and was frequently used in the construction and decoration of tombs and coffins. Among its adaptations for religious purposes may be noted its use as a substitute for more expensive materials in the statues of deities, as well as the countless figurines or statuettes in this material, many of which have been found on the sites of temples or in private shrines; and besides the statuettes and other figures, of which such quantities have been found in tombs, it was used for imitations of jewellery or metal vases made solely for a sepulchral purpose. It also supplied many of the wants of every-day life, in the form of spindle-whorls, theatre-tickets, lamps and braziers, and culinary and domestic utensils of all kinds, taking the place of the earthenware of modern times. It supplied the potter with moulds for his figures and the sculptor with models for his work in marble or bronze, and placed works of art within the reach of those who found marble and the precious metals beyond their means. One of the most elementary uses of clay is for the manufacture of building material, for which it plays an important part, as we have already seen, in the history of the Semitic races. Both burnt and unburnt bricks were employed in Egypt and Mesopotamia, and their use has already been referred to in the Introduction. Vitruvius[303] speaks of the use of brick in the palace of Kroisos at Sardis, and we also read of the walls of Babylon and Larissa (on the site of Nineveh) as being of brick.[304] Generally speaking, sun-dried bricks belong to an earlier period of development than baked bricks; at any rate, this is the case in the buildings of Greece and Rome. In Greece itself the antiquity of brick is implied by the words of Pliny,[305] who tells us that Hyperbius and Euryalus of Athens “were the first to” construct brick-kilns (_laterarias_) and houses; before their time men lived in caves. He further goes on to say that Gellius regarded one Toxius as the inventor of buildings of sun-dried clay, inspired by the construction of swallows’ nests. The reference is obviously to the employment by swallows of straw and twigs to make the clay for their nests cohere; this may well have suggested, in the first instance, the principle of mixing straw with sun-dried clay bricks, as was done by the Israelites in their bondage in Egypt. The method is one still practised in the East, where in such countries as Palestine and Cyprus whole villages built in this fashion may be seen.