Science News WIRE STORIES ON THE MEETING OF THE NATIONAL ACADEMY OF SCIENCES See allHide authors and affiliations Science 08 May 1925:Vol. 61, Issue 1584, pp. x-xiiDOI: 10.1126/science.61.1584.x Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.