Reedy, Chandra2015-11-052015-11-052015-11-05http://udspace.udel.edu/handle/19716/17212Ethnographic ceramics from Yingjing, Sichuan Province, China, made with half powdered coal cinder and half clay. Image analysis was done to compare porosity of unfired sherd (3% Total Optical Porosity), sherd that was fired in the kiln but did not go into the adjacent ash glaze pit (11% Total Optical Porosity), sherd that was fully fired and ash glazed (11% Total Optical Porosity), and overfired sherd (25% Total Optical Porosity). Image analysis was done using Image-Pro Premier with Smart Segmentation tool. Full details about the coal-clay ceramics of Sichuan Province are found in: Chandra L. Reedy, Pamela B. Vandiver, He Ting, Ying Xu, and Wang Yanyu, Preliminary investigation of the coal-clay composite ceramics of Sichuan Province, China, in 2015 International Symposium on Ancient Ceramics – It’s Scientific and Technological Insights, edited by Chen Shiping. Shanghai: Shanghai Institute of Ceramics, Chinese Academy of Sciences, pp. 113-116 (2015).Image10.1557/adv.2017.286