News & CommentScientific Notes and News GENERAL Science 30 Apr 1897:Vol. 5, Issue 122, pp. 690-694DOI: 10.1126/science.5.122.690 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 5, Issue 12230 April 1897 Table of Contents Print Table of Contents Ed Board (PDF) Front Matter (PDF)