The name of Charles Hannong is connected with an early pottery of Strasburg, which was mostly a manufactory of earthenware stoves. This pottery was founded in 1709. In 1721 Hannong and a German porcelain worker, who was taken into partnership by the former, began to make porcelain, but after a short existence under the sons of Hannong this pottery was closed.
Statuettes, clocks, dinner and dessert services were made in Strasburg glazed earthenware, with modelled and painted decoration. The colouring and decoration was of the prevalent Rococo, bright and clear; flowers of all kinds, and Chinese pictures, were imitated mostly on white grounds (Fig. 60).
Fig. 60.—Plate, Strasburg Ware.
French Porcelain.
The desire to imitate the porcelain ware of China led to the discovery of the soft paste (pâte tendre). The names “porcelaine de France” and “Sèvres porcelain” have also been given to it. As previously mentioned, it was made at Rouen in 1690, at St. Cloud in 1698, and at Lille in 1711, but in all these cases in a small and tentative way.
The composition of the paste in the French soft porcelain is described by MM. Gasnault and Garnier in their handbook of “French Pottery” as follows: “The paste was composed of the sand of Fontainebleau, saltpetre, sea salt, soda (soude d’Alicante), alum, gypsum, or parings of alabaster; all these elements were mixed together and placed in an oven in a layer of considerable thickness, where, after being baked for at least fifty hours, they formed a perfectly white frit, or vitrefied paste. The frit was mixed with Argenteuil marl in the proportion of nine pounds of frit to three pounds of marl, &c.”
The glaze is described as consisting of “the sand of Fontainebleau, litharge, salts of soda, Bougival silex or gun-flint, and potash.” All these were ground and melted together, and afterwards the vitreous mass was re-ground in water and thus formed the glaze.
The soft paste is much superior for artistic works owing to the glaze incorporating with the colours in a perfect manner, rendering them equally brilliant with the enamel, but this is not the case with the hard or natural kaolin, as the glaze on this does not blend completely with the colours of the decoration. The soft paste porcelain is, however, too porous for articles of domestic use, and can be tested by its being easily scratched by a knife.
