LettersComments and Communications ASTIA and GSIS See allHide authors and affiliations Science 11 Jan 1952:Vol. 115, Issue 2976, pp. 48DOI: 10.1126/science.115.2976.48-a SAUL HERNERFind this author on Google Scholar Find this author on PubMed Search for this author on this site M. K. HEATWOLEFind 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.
Science Vol 115, Issue 297611 January 1952 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)
