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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/PT/61/6/9" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Plate, draft of spiral bulb by [William Hopkins]</dc:title>
  <dc:description>Early draft of a diagram, incorporated into the text, showing the design of a spiral bulb attachment for a thermometer. Likely drawn by Hopkins. A later engraved version of this figure is found at PT/61/6/3 and another early draft is found at PT/61/6/5.

Subject: Scientific Instruments

Published in Philosophical Transactions as 'On the construction of a new calorimeter for determining the radiating powers of surfaces in air; and its application to the surfaces of various mineral substances'.

Received by the Royal Society on 1 June 1860. Read 21 June 1860.</dc:description>
  <dc:date>[1860]</dc:date>
</rdf:Description>