Sauce boat in underglaze blue, East London, c. 1764-1768, unmarked. Soft-paste phosphatic porcelain. H. 100 mm. (Private collection). Moulded with fruits and painted with Oriental style flowers, insects, and an internal cell border and external gadrooning; see Parkside Antiques (1988: No. 12). This boat belongs to the Bowcock period (1755 ? ~1769) when gypsum was reintroduced to the paste, glass cullet was removed, crushed silica increased to around 45 wt% and ball clay reduced to around 15 wt%; see Ramsay and Ramsay, 2007: Table 13. Compositionally the Bowcock period was characterised by a more homogenious body, which tended to be lighter in weight, more porous and chalky looking with a tendency to stain in unglazed areas. Translucency in earlier members displays what Tilley terms "Bow brown" while later members show a reduction in light transmission.