Flint stone, which has first been heated to a low bisque temperature to soften it, and then crushed, is used as the kiln bed and placed on top of the hard fire brick floor about 1/2" thick. To be sure that the pots receive enough heat approximately a 10" open space is left between the first row of pots and the door. A "V" made by two straight bricks placed in front of each burner acts as a baffle for the flame and prevents the flame from rushing under the pot and flint stone bed.
The original object was scanned as a TIFF file on a Nikon Coolscan 4000 film scanner at approximately 4000 pixels on the long dimension. A 300 ppi JPEG file limited to 1024 pixels on the long dimension was then added to the CONTENTdm database.