Meetings & Meeting ReportsSocieties and Academies THE IOWA ACADEMY OF SCIENCE See allHide authors and affiliations Science 17 Jun 1932:Vol. 75, Issue 1955, pp. 641-643DOI: 10.1126/science.75.1955.641-a Joseph C. GilmanFind 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.
Science Vol 75, Issue 195517 June 1932 Table of Contents Print Table of Contents Back Matter (PDF) Front Matter (PDF)
