News & CommentSpecial Correspondence PARIS LETTER By V. See allHide authors and affiliations Science 29 Apr 1887:Vol. ns-9, Issue 221, pp. 406-407DOI: 10.1126/science.ns-9.221.406 V.Find this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.