“…Consequently a standard numbering system will be used in this discussion. In the chromatograms, I marks the complex mixture of acids of which formic, /3-formylpropionic, levulinic, and acetic acids have been identified (2). II marks the succinic acid portion; III the 1,2,4butanetricarboxylic acid portion; and IV the 1,2,3-propanetricarboxylic acid portion.…”