[Illustration: SUCCESSION OF ICE AGE FLINT TYPES, INDUSTRIES, AND ASSEMBLAGES, AND OF FOSSIL MEN, IN NORTHWESTERN EURAFRASIA] For some reason, the habit of making blades in Palestine and Syria was interrupted. Blades only reappeared there at about the same time they were first made in Europe, some time after 45,000 years ago; that is, after the first phase of the last glaciation was ended. [Illustration: BACKED BLADE] We are not sure just where the earliest _persisting_ habits for the production of blade tools developed. Impressed by the very early momentary appearance of blades at Tabun on Mount Carmel, Professor Dorothy A. Garrod first favored the Near East as a center of origin. She spoke of “some as yet unidentified Asiatic centre,” which she thought might be in the highlands of Iran or just beyond. But more recent work has been done in this area, especially by Professor Coon, and the blade tools do not seem to have an early appearance there. When the blade tools reappear in the Syro-Palestinian area, they do so in industries which also include Levalloiso-Mousterian flake tools. From the point of view of form and workmanship, the blade tools themselves are not so fine as those which seem to be making their appearance in western Europe about the same time. There is a characteristic Syro-Palestinian flake point, possibly a projectile tip, called the Emiran, which is not known from Europe. The appearance of blade tools, together with Levalloiso-Mousterian flakes, continues even after the Emiran point has gone out of use.