LettersDiscussion and Correspondence MARCHING IN STEP By Warren Weaver See allHide authors and affiliations Science 15 Aug 1919:Vol. 50, Issue 1285, pp. 162-163DOI: 10.1126/science.50.1285.162-a Warren Weaver 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.