<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/67/6/3" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Unpublished figure, sketch for focometer by Silvanus Phillips Thompson</dc:title>
  <dc:description>A sketch of the focometer described in Thompson's paper. Note reads 'Here will be inserted a cut prepared from a photograph of the apparatus'.

Subject: Scientific apparatus and equipment / Optics</dc:description>
  <dc:date>[1891]</dc:date>
</rdf:Description>