EN
An attempt was undertaken by the authors to apply the transmission electronic microscopy for their studies on „Celtic” pottery. Typical in most findings representing the relics of the Celtic culture is the presence of pottery pieces manufactured from graphite material or soot. The authors subjected to examinations the broken sherds coming from a Celtic settlement at Pleszów. The electronographic and X-ray method allowed to identify in an undisputable way the crystalline phase of graphite. In the case of fragments investigated it has been found beyond the doubt that the pottery mass contained natural graphite and no soot admixtures at all.