<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/CLP/4i/23/1" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Drawing, modification of an air pump by Christian Huygens</dc:title>
  <dc:description>A sketch of a 'pneumatic engine' (air pump) designed by Christian Huygens, with lettering to indicate its parts.

Sketch has the engine on a stand with 11 parts.

Subject: Pnuematics / Scientific instrument</dc:description>
  <dc:date>28 January 1663</dc:date>
</rdf:Description>