News & CommentScientific Events JOHN FILLMORE HAYFORD Science 05 Jun 1925:Vol. 61, Issue 1588, pp. 583DOI: 10.1126/science.61.1588.583 Article Info & Metrics eLetters PDF Article Information vol. 61 no. 1588 583 DOI: https://doi.org/10.1126/science.61.1588.583 Published By: American Association for the Advancement of Science Print ISSN: 0036-8075 Online ISSN: 1095-9203 Copyright & Usage: © 1925 Other Contributors: American Association for the Advancement of Science Author Information Altmetric Article usage Article lifetimeLast 6 monthsThis monthArticle usage: July 2007 to September 2020 AbstractFullPdf Jul 2007002 Oct 2007001 Mar 2009001 Jul 2009001 Dec 2011002 Jan 2012001 Oct 2012001 Oct 2013001 Sep 2015100 Apr 2017002 Aug 2018001 Oct 2018001 Mar 20190011 Mar 2020001 Sep 2020001 View PDF Extract