<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/24/229" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy letter, from Sir John Herschel to Robert Main, dated at Collingwood</dc:title>
  <dc:description>Copy of a letter. Sends Robert Main a copy of Angelo Secchi's double star observations pointing to a very large number of calculation errors.</dc:description>
  <dc:date>29 September 1868</dc:date>
</rdf:Description>