Tom, one needs to look at other contemporary person's arsenic levels. The wallpaper account was the original poisoning theory as you know. Other ideas superseded. Medical evidence is pretty strong for Bonaparte's demise from gastric cancer. Both in the post-mortem findings, family history and weight loss data. I recommend Martin Howard's tome, 'Napoleon's Poisoned Chalice', in which there are decent balanced views, with which I concur. Michael.