<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/26/58" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Affidavit of Sir John Herschel</dc:title>
  <dc:description>Regarding the case between William Henry Fox Talbot (plaintiff), and James Henderson (defendant). Herschel remarks on his use of gallic acid, and Talbot's invention called the calotype process.</dc:description>
  <dc:date>1854</dc:date>
</rdf:Description>