<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/7/108" 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 Georg Adolph Erman to Sir John Herschel, dated at Berlin</dc:title>
  <dc:description>Autograph letter signed by sender. Outlines the recent work in terrestrial magnetism by H. T. R. Petersen and himself. Comments on their results.</dc:description>
  <dc:date>2 March 1871</dc:date>
</rdf:Description>