News & CommentScientific Events THE UNITED STATES BUREAU OF FISHERIES See allHide authors and affiliations Science 18 Jul 1930:Vol. 72, Issue 1855, pp. 60-61DOI: 10.1126/science.72.1855.60 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.