News & CommentQuotations STATE ACADEMIES OF SCIENCE See allHide authors and affiliations Science 17 Feb 1928:Vol. 67, Issue 1729, pp. 195-196DOI: 10.1126/science.67.1729.195-b Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.
Science Vol 67, Issue 172917 February 1928 Table of Contents Print Table of Contents Front Matter (PDF)