The South presents us with a much more primitive picture. The large layer of Stone Age finds, which came to light in Crete, produced vases with incised geometrical ornament, alongside of coarse undecorated pottery, but curvilinear patterns of Thessalian type are completely absent and painted vases are rare. The reason for a less elaborate development of Neolithic civilization in Crete seems to be that it gave place to the Bronze Age comparatively [Illustration: PLATE II. Fig. 1. STONE AGE BOWL FROM THESSALY.] [Illustration: Fig. 2. FACE-URN FROM TROY II-V.] early: in Thessaly it seems to go down far into the second millennium. According to these early vase finds one has thus to picture to oneself the beginnings of ceramic art. First, the most essential household vessels are fashioned by hand out of imperfectly cleansed clay, and burnt black in the open fire, and before long the outer surface is also polished, probably with smooth stones. Rectilinear ornaments are pressed or incised into the soft clay, and by degrees the method of filling and indicating the incised lines by a white substance is learned; the clay is also treated plastically, for instance channelled. Gradually the clay is made less impure, is more cleanly polished and more evenly baked in the oven, and by the actual firing has various colours, red, black, grey, yellow and brown, imparted to it. Thus a ground is also obtained for painting, on which the rectilinear ornaments are imposed with colour. Greater solidity and brighter colouring are obtained by covering the vase with a slip, which moreover sets off the painting excellently. The invention of the wrongly styled ‘varnish,’ a black colour glaze which, though technically undeveloped, appears even in North Greece of the Stone Age, is of the highest importance for the whole history of Greek vase-painting. The forms are primitive, little articulated, but already very various: the decoration covers uniformly almost the whole vase. But the different techniques do not regularly succeed each other; inventions are not immediately communicated from one locality to another; primitive methods subsist alongside of more advanced, nay even sometimes drive them out again. This much is clear, that a section taken through these contemporaneous prehistoric civilizations would present a highly variegated aspect. The Stone Age is succeeded by the Bronze Age, here earlier and there later; here more quickly, there more slowly; i.e., metals are gradually introduced, and with them new techniques and a new civilization. It is evident that to the earlier Bronze Age belong a series of innovations which are of decisive importance for the history of vases, the invention of the potter’s wheel, the perfection of the so-called ‘varnish,’ and the imitation of metal forms in clay. In most places the potter’s oven and the painting of vases appear only in the early Bronze Age.