468      POTTERY AN!) PORCELAIN
and the Nativity. As is well known, the modelling of this
class of work is quite difficult, since the relief parts and
depressions must be so accurately calculated that the
shades formed by the rays of light passing through the
240.-PARIAN TRANSPARENCY, CHRIST AND TilE ADULTERFsS."
PI  ENiXVILLE, PA.
varying thickness of the semi-transparent parian will
represent a finished picture in lights and shades. Many of
these were made in Germany and other parts of Europe
by experienced modellers, and were frequently copies of