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Archaeology
of a
San Francisco Neighborhood

This Web site was funded by the California Department of Transportation (Caltrans).

It was created by Anthropological Studies Center (ASC).

Washing & Sorting

Archaeologist analyzing seedsFrom the excavation site, artifacts are transported to the laboratory for processing. Artifacts come out of the ground encrusted with dirt or corrosion. Sometimes the dirt makes it impossible to tell what the object is. Other times it obscures important clues such as patterns or impressed patent dates. To remove a century or more of grime the artifacts are carefully washed or brushed. Archaeologists then label each cleaned artifact using pen and ink to inscribe tiny identification numbers.

Once the artifacts are labeled, one of the most interesting stages in theGlass sorted by color prior to reconstruction laboratory process begins. In order to understand more about the people whose refuse ended up in Privy 507, it is important to find out not just what type of artifacts were found in the privy, or how old they were, but how many of each different type of artifact the privy contained. This isn’t easy, as many artifacts come out of the ground broken and shattered. While the faunal specialists sort and analyze the food bones, the lab archaeologists sort all the other Privy 507 artifacts into broad categories: glass, ceramics, metal, and ‘other.’ The objects in each of these categories are laid out on large tables and grouped together by color and type. For instance, all the aqua colored bottle glass is laid out in one group, all the colorless table glass in another. Then comes the fun (or frustration) of piecing together each of the artifacts in this vast jigsaw puzzle. Some artifacts can be completely reconstructed while only tantalizingly incomplete portions of others are recovered. As bottles, plates and glasses are reconstructed using tape, a
three-dimensional portrait of the privy’s contents begins to grow in front of the archaeologist.

 

 

 

 

 


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