Letters Meteorology and Mathematics By Franz A. Velschow See allHide authors and affiliations Science 23 Jan 1891:Vol. ns-17, Issue 416, pp. 51DOI: 10.1126/science.ns-17.416.51 Franz A. Velschow Find 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.
Science Vol ns-17, Issue 41623 January 1891 Table of Contents Print Table of Contents Back Matter (PDF)