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Published online by Cambridge University Press: 24 August 2009
* See also Professor F. Sherwood Rowland's Guest Comment on pages 193–4 of our latest issue and cf. the DuPont Position Statement published on pp. 363–4 of this one.—Ed.
† Though smaller ones have now been recognized as presaged in our footnote on page 193 of our latest issue and on which further reports are awaited.—Ed.
†† See the account by Ralph Kazarian on page 178 of our Summer issue.—Ed.