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The types of decoration on tin glaze ceramics.
The glaze is
a clear lead glaze to which has been added tin-oxide in a proportion
of approximately 1:3.
The addition
of tin-oxide to the glaze created an opaque, generally whiter surface
that was often decorated with blue and polychrome designs.
The glaze is
fragile and easily separates from the body. Because the tin content
in the glaze was a more expensive ingredient than the lead, some
potters in England and Holland sometimes used a lead or a greatly
thinned tin-glaze on the backs of plates, dishes, and chargers.
Lead glazes
do not appear to have ever been used on the back of Spanish majolica
dishes.
Decoration
A wide variety of decorations are found on tin glaze earthenwares,
with the most common including painting and powdering. In some cases,
vessels were also left undecorated.
After a preliminary
firing of the unglazed body the pot was glazed and then painted
in preparation for the second and final firing.
Tin-glazed
wares were most often decorated with cobalt oxide enamel, which
fired blue.
Polychrome
decorations are also known, particularly on early 17th century vessels
and again after c1690, and were made with other metallic oxides
including iron.
The
colors on early polychrome pieces tend to be less vibrant than those
on later vessels. Decorative motifs included geometric, floral,
landscape, figures, and Chinese designs.
Decorative
motifs are also chronologically sensitive.
In
the 1640s, English potters started making plain
white vessels without decoration, so that the ware could be mass-produced.
In
1660,
after the restoration of the monarchy , colorfully painted decorations
became popular again, particularly 'blue-dash chargers', which were
large dishes decorated with blue dashes on the rim and some type
of design in the center such as floral and fruit patterns, Adam
and Eve motifs, or royal portraits.
After
the 1630s, Chinese designs became popular.
In
a systematic study of decorations found on dated tin-glazed vessels
in museums, Ellen Shlasko (1989) was able to document and define
date ranges for certain types of decorations found on English tin
glaze ceramics. Her findings have been published (Miller 2002) and
are summarised below.
| Decorative
Motif |
Period of Use |
| Bird
on Rock |
1628
– 1718 |
| Royalty |
1643
– 1783 |
| Armorial |
1645
– 1776 |
| Maritime |
1645
– 1786 |
| Seated
Figure |
1669
– 1737 |
| Chinese
Floral |
1669
– 1793 |
| Inscription
within Wreath |
1670
– 1754 |
| Oriental
Landscape |
1671
– 1788 |
| Green/Turquoise
Glaze |
1687
– 1703 |
| Dot
and Diaper |
1696
– 1788 |
| Panels |
1709
– 1774 |
| Rim
Lining |
1729
– 1793 |
| Bianco-sopra-bianco |
1747
– 1768 |
| Cracked
Ice |
1748
– 1774 |
| Blue
Glaze |
1752
– 1771 |
| Overall
Powedering |
1628
– 1673 |
| Sponged
|
1708
– 1786 |
| Scratched |
1725
– 1788 |
| Powdered
Over Stencils |
1738
– 1764 |
| Source
Shlasko 1989 |
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