LettersDiscussion and Correspondence ROTERTIA By Frederick Palmer See allHide authors and affiliations Science 24 Mar 1922:Vol. 55, Issue 1421, pp. 317DOI: 10.1126/science.55.1421.317 Frederick Palmer 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.