A brief summary of the history of glassmaking up to the later lst century B. C. is given. Slight archaeological evidence suggests that glass-blowing, a revolutionary technique, originated in Syria, perhaps c. 50 B.C., whence it spread first to northern Italy where Syrians founded factories, and thence rapidly to most north-western provinces. Alexandrian-type cast vessels probably continued in production in Campania and Rome uutil mid-1st century A.D. From later that century almost every eastern area also had glass-houses, and long-distance trade was probably predominantly from east to west. Migration of eastern workers to Gaul and the Rhineland is attested by epigraphy and the contemporaneous introduction of new techniques in east and west. In the later 1st century A.D. colorless metal was much used for blown glass, and by early 3rd century most of the best glass was colorless. By mid-4th century mobility of workers seems to have ceased and glassmaking center developed along individual lines. -- AATA