ArticlesAddress ENVIRONMENTAL MEDICINE + See all authors and affiliations Science 15 Nov 1935:Vol. 82, Issue 2133, pp. 447-452DOI: 10.1126/science.82.2133.447 ALFRED C. REEDFind 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 82, Issue 213315 November 1935 Table of Contents Print Table of Contents Back Matter (PDF)
