<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MS/257/2/301" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>'Directions for using the Photometers' by [John Frederick William Herschel]</dc:title>
  <dc:description>Herschel describes how to handle and use the ‘sensitive paper’, the photometer, and details on how to observe.</dc:description>
  <dc:date>[1792-1871]</dc:date>
</rdf:Description>