Alan - it would be strange if that were the case (although it certainly could be the case) as in Haist the study is quoted in the section about both solvent action and edge effects. Although it is not clear how the measurements were made.

Attached is a summary I put together for discussion - if someone can tell me how to get it into this thread without screwing up all the formatting (I typed it in MS Word), I'd like to put it in the text here instead of as an attachment.