News & CommentScientific Events SIGMA XI AND THE CALIFORNIA INSTITUTE OF TECHNOLOGY By John C. Shedd See allHide authors and affiliations Science 01 May 1925:Vol. 61, Issue 1583, pp. 463DOI: 10.1126/science.61.1583.463 John C. Shedd 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.