Prosta'stius
a Roman artist in mosaic, of the time of the emperors, whose name is inscribed on a mosaic pavement found at Aventicum (
Avenches) in Switzerland. (Schmidt,
Antiq. de la Suisse, pp. 17, 19, 24; R. Rochette,
Lettre à M. Schorn, p. 394.)
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P.S]