Research News Earthquake Predictions: Breakthrough in Theoretical Insight? + See all authors and affiliations Science 25 May 1973:Vol. 180, Issue 4088, pp. 851-853DOI: 10.1126/science.180.4088.851 Allen L. HammondFind 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.