Association AffairsAAAS Meeting SECTION D.—MECHANICAL SCIENCE AND ENGINEERING By JOHN J. FLATHER See allHide authors and affiliations Science 06 Aug 1897:Vol. 6, Issue 136, pp. 221DOI: 10.1126/science.6.136.221 JOHN J. FLATHER 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.