Of the Mary Rose samples, the core sample falls below the modern oak sample for both Ac/AlS and Ac/AlG. The edge sample shows high variation, with the guiacyl Ac/Al ratio substantially higher than all the other samples, especially modern oak. This is consistent with the pattern established by the other four samples. The Mary Rose edge syringyl ratio is indistinguishable from both modern oak and the untreated Mary Rose sample.. The S/G ratios of the modern oak, HMS Unicorn and HMS Victory samples are indistinguishable (Figure ), with the value for SB Tollesbury remaining above 1.5. Two of the younger vessels (HMS Unicorn, and HMS Victory) have S/G ratios indistinguishable from the S/G ratio of modern oak (Figure ). These four samples establish a typical S/G around 2 and above 1.5 for historic waterlogged wood.