Abstracts THE AMERICAN CHEMICAL SOCIETY By Charles L. Parsons See allHide authors and affiliations Science 22 Dec 1922:Vol. 56, Issue 1460, pp. 722-730DOI: 10.1126/science.56.1460.722 Charles L. ParsonsFind 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.