ArticlesSpecial Article THE LIFE OF METASTABLE HELIUM AND MERCURY By Carl Eckart See allHide authors and affiliations Science 15 May 1925:Vol. 61, Issue 1585, pp. 517-518DOI: 10.1126/science.61.1585.517 Carl Eckart 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.