News & CommentScientific Events SUMMER MEETING OF THE PENNSYLVANIA ACADEMY OF SCIENCE By Bradford Willard See allHide authors and affiliations Science 28 Aug 1936:Vol. 84, Issue 2174, pp. 196DOI: 10.1126/science.84.2174.196 Bradford WillardFind 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.