Eugène Kremer (pres.), Intercalaire 'Butterfly' vase, 1894-1903, H. 17.8 cm. Made by Verrerie d'Art de Lorraine, Burgun, Schverer & Co., Meisenthal. Overlaid glass in two shades of green, satined. Etched in several steps. Decor with plants and a butterfly highlighted with polychrome intercalaire painting. Incised interior drawing, metallic reflections. Neck decorated with a ribbon of pink and white enamel with gold contours. Bottom signed: Meisenthal BS & Co. (diamond-cut)., Painting between layers – ‚Intercalaire’Eugène Kremer developed c. 1890, probably in collaboration with Emile Gallé, a new kind of glass decoration. This technique of painting between layers had been patented in Berlin on 21. February 1896 and in Paris, almost a year later, on 23 March 1897. Shortly before 1900, the Daum brothers registered a similar kind of decoration that they had called ‚Décoration intercalaire’ resp. ‚Verreries de grand feu sous couverte’. Vases with this kind of decoration had a huge success at the Paris World Fair of the same year. High-firing glazing had been used on ceramics for years, the only difficulty most probably was the transfer on the different material. Before putting enamel paint on the glass jar, it had to be totally cooled down. Then after putting the enamel on the jar, it was being repeatedly overlaid and re-heated. This recurrent heating and cooling-down of the glass body signified an extreme delicate manufacture.