<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/22/259" 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 William Henry Smyth, dated at Collingwood</dc:title>
  <dc:description>Copy of a letter. Cannot attend the Royal Astronomical Society meeting to explain Mme. Witte's lunar model; will send notes of explanation. Busy with the publication of Cape Results. Will write paper on improved method of calculating double star orbits. Discusses relationships of periods of Saturnian satellites.</dc:description>
  <dc:date>29 November 1845</dc:date>
</rdf:Description>