Craqueleure in the glaze around the relief.
Tony Johnson, The Morris Ware Tiles & Art of George Cartlidge, Private Press, page 55 catalogue number 126 (brown). These actual tiles illustrated.
George CartlidgeBorn in 1868 he trained at Hanley School of Art, staying and painting at the school until 1897 when he was apprenticed to Sherwin & Cotton Tile Works. Here he helped to develop a series of portrait tiles from photographs - subjects included international politicians, military leaders, artists and religious figures. He experimented with the technique of Emaux Ombrants - a technique of flooding glaze onto a shallow relief design which created a smooth graduated tone giving a realistic 'photographic' quality to the design.