<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/23/270" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy of draft letter, from Sir John Herschel to William Crookes, dated at Collingwood</dc:title>
  <dc:description>Copy of draft letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Sends spectra obtained by Ioduret of potassium. Gives details of his latest photographic experiments.</dc:description>
  <dc:date>30 August 1859</dc:date>
</rdf:Description>