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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/15/372" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter, from Heinrich Christian Schumacher to Sir John Herschel, dated at Altona</dc:title>
  <dc:description>Autograph letter signed by sender. Will forward Astronomische Nachrichten to John Frederick William Herschel and Astronomical Society. Comments on quality of [Joseph] Fraunhofer's micrometer, which has only the wires illuminated. [C. F.] Gauss uses a theo</dc:description>
  <dc:date>20 January 1824</dc:date>
</rdf:Description>