Showing posts with label Alexandria Archaeology Museum. Show all posts
Showing posts with label Alexandria Archaeology Museum. Show all posts

Tuesday, March 6, 2012

Kilns Gone Wrong

Earthenware separating bars, Piercy Pottery site. Courtesy, Alexandria Archaeology Museum
There are archaeological sites where evidence of the production of stoneware and earthenware are found. Often these sites are called "transitional" with the implication that the potters were moving from working with earthenware to stoneware. However, my thoughts are that many of the potters, particularly in regions with less potters, or with higher levels of competition, met the market demands by making both either simultaneously or attempting to make both at some point in their production. For example, the William Rogers site in Yorktown, Virginia was making both stoneware and earthenware. There are certainly numerous sites where the potters did in fact move from earthenware to stoneware, such as the Thompson potters in Morgantown, West Virginia (on which topic I highly recommend an article on these potters in the 2011 Ceramics in America).
REALLY overfired bar used on the top of a jug -- the ring in the middle was the top of a jug! Piercy Pottery site. Courtesy, Alexandria Archaeology Museum

Closeup of the melted bar. Piercy Pottery site. Courtesy, Alexandria Archaeology Museum
The (nerdy) humorous thing is to see archaeological evidence that potters who may have been more familiar with one material (i.e. earthenware), may not have been familiar with the other (i.e. stoneware). Which explains why sometimes you read about potters being brought in for their expertise in one material or another. For example, when I was recently at the Alexandria Archaeology Museum, I saw a collection from the Piercy Pottery site. This was primarily an earthenware production site, but there was some evidence of stoneware production as well. I should say that there is speculation that because the amount of stoneware wasters are so low, the attempts at stoneware production were made in the late 18th-century when the site was rented by another potter who went on to make both earthenware and stoneware. Either way, the wasters revealed that at some point their stoneware attempts went horribly wrong! The stoneware separator bars they made are also some of the thickest bars I have seen yet, which is not surprising after seeing their earthenware separator bars (first photo at top). 
On left, bisque stoneware separator bar and fired salted separator bar on right. Piercy Pottery site. Courtesy, Alexandria Archaeology Museum
Their method of stacking the stoneware pottery seems more precarious, too. Typically, one wants to balance the weight of the pieces over another, placing rims, bases, and other points of weight on top of each other.
Bar adhered to base of jar, with indentation showing where the rim of another jar rested during firing. Piercy Pottery site. Courtesy, Alexandria Archaeology Museum

How the base of the jar rested above the rim of the other vessel-- off center! Piercy Pottery site. Courtesy, Alexandria Archaeology Museum
I said that this was humorous because I reflect on these pieces both as a potter and as a scholar. As a potter, I can only imagine the horror on the workers' faces when they opened the kiln and their experiment had gone horribly wrong (been there, done that!). I chuckle sometimes because I think there were a lot of "oh, poop!" moments historically, just like there are in contemporary potters' lives. And as a scholar, I reflect on the attempts of pottery production sites to challenge an import market, a growing population of potteries, and the changes in the uses of utilitarian vessels and forms.
For more information on the Piercy Pottery site, be sure to check out Barbara Magid and Bernard K. Means' article in the 2003 Ceramics in America. You can read the text here, but you miss the beautiful photos!

Friday, January 27, 2012

Making the News!

An exciting thing to share! An announcement for the presentation I am doing tomorrow at the Alexandria Archaeology Museum made it as the feature photo for the weekend guide in the Washington Post! Granted, it's a photo of the kiln furniture, but check out the caption! I feel honored! And now, a little nervous...

Thursday, January 26, 2012

Making kiln furniture

Squatty separator. Pawley Kiln site, Baltimore, MD. Courtesy, Maryland Archaeology and Conservation Lab.
 I am getting ready for a presentation on my kiln furniture research this weekend in Virginia. In doing so, I have been thinking a lot about how to visualize how the furniture was made. It helps having access to clay! One of the most fascinating pieces of kiln furniture is a separator, often called many things, but in following the most commonly used term, and Georgeanna Greer's terminology, we're going to call the shape a spool.
My hand around a separator, showing my fingers over the hand print on the separator. Webster kiln site, Fayetteville, NC. Courtesy, The Museum of the Cape Fear
 This piece of kiln furniture was likely made as the kiln was being loaded as the sizes and lengths often vary, and the nature of its use would make it necessary to be made while loading. As seen in the image below, the spool separators were likely used in the context of stacking jugs (seen in yellow and red below) and were also used to separate straight-sided vessels which were stacked on top of one another.
Conjectural drawing of kiln furniture in use. Drawing by Mike Heindl.
I made a few photos of how I am pretty sure this piece of kiln furniture was made. First, a bit of clay was rolled out. This rolling is evidenced by broken examples which show the spiraled pattern of the clay on the interior.
Rolling out the clay

Rolling

Rolled clay
Then the rolled section was grasped in the palm of the hand. A fascinating aspect of this project has been to see the various finger and hand prints left behind by the workers making the kiln furniture. Some of the fingerprints have been very tiny, like children's, and some of them are very, very large.
Grasping the rolled clay

Then the ends were smashed flat. These flattened areas would then fit to the edge or side of whatever vessel this piece was applied to.
Flattening one side

Flattened end

Flattening the other side
Ta-da! Quickly made kiln furniture, with the same impressions as found on the archaeological materials.
Kiln furniture, ready for use!
If you are in the Alexandria, Virginia area, be sure to come by the Alexandria Archaeology Museum this Saturday, January 28th, at 10:00 for my presentation. Should be informal, and hopefully informative!