Articles NOTES ON EXPERIMENTAL CHEMISTRY See allHide authors and affiliations Science 10 Sep 1881:Vol. os-2, Issue 64, pp. 429DOI: 10.1126/science.os-2.64.429 Albert B. PrescottFind 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.