Backstamp dating

They are often "crazed" or covered with a web of cracks.As the earliest American pottery, redware dates from 1725 through the present (Ramsay 198).Materials from these categories are both the most frequently encountered and the most useful for assigning dates. Ceramics are objects that are made from baked clay.

The time frame is generally from the beginning of the nineteenth century to the First World War (1920).

Many crafts underwent industrialization and technological change during this period.

The purpose of this guide is to provide a general introduction to some of the historic artifacts recovered from archaeological sites in the Upper Sangamon Basin of east-central Illinois.

Most of the field work has focused on the Mahomet area, but these sites are considered typical of material from the larger study area.

The common procedure for identifying earthenwares is by touching the tongue to the paste.

If the surface feels sticky, then it is earthenware.

The vitrification process involves the temperature and conditions under which the particles of clay fuse.

The high temperature has the effect of changing the physical properties of the clay so that it, for instance, will not dissolve to mud when exposed to water.

Tin-enameled glaze wares are known by different names generally depending on their country of origin.

Material produced in France and Italy is known as faience, material from Spain is labeled majolica, and objects from England and Holland are referred to as delft.

The most frequent expressions are in the form of containers and table service.

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