<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/17/406a" 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 John Tyndall to Sir John Herschel, dated at Royal Institution</dc:title>
  <dc:description>Autograph letter signed by sender. Thanks for John Frederick William Herschel's suggestions on John Tyndall's outline of comet speculations. [G. B.] Airy, too, has replied. Includes more speculations on 'envelopes' and nucleus of comet.</dc:description>
  <dc:date>29 May 1869</dc:date>
</rdf:Description>