Meetings & Meeting ReportsSocieties and Academies THE PHILOSOPHICAL SOCIETY OF WASHINGTON See allHide authors and affiliations Science 06 May 1904:Vol. 19, Issue 488, pp. 735DOI: 10.1126/science.19.488.735 CHARLES K. WEADFind 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.