LettersCorrespondence To the Editor of "Science." See allHide authors and affiliations Science 15 Oct 1881:Vol. os-2, Issue 69, pp. 495DOI: 10.1126/science.os-2.69.495-a Geo. B. MerrimanFind 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 below.