Dear Isogeochem subscribers-
I'm interested in extracting lipids from prehistoric (low-fired) ceramics in
order to analyze carbon isotopes.  I'm looking for C4 vs. C3 plant residues
in the ceramic matrix.  I have found literature on lipid extraction by
Evershed, Heron and others, but have not found other sources.  Have any of
you done such work?  If so, I would greatly appreciate any references,
especially references outside strictly archaeological literature.  Thanks!
Janet Schulenberg

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409 Carpenter
Penn State Univeristy
University Park, PA 16802