News & CommentHealth Matters HEALTH MATTERS Science 28 Mar 1890:Vol. ns-15, Issue 373, pp. 201DOI: 10.1126/science.ns-15.373.201 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol ns-15, Issue 37328 March 1890 Table of Contents Print Table of Contents Back Matter (PDF) Front Matter (PDF)
