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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/RB/1/10/111" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Material relating to 'Spring of the Air'.</dc:title>
  <dc:description>Description of experiments with a weatherglass by `Mr Ball, written for `my Lord' (fol. 154).  Refers to `these notes upon the 18th Experiment', probably related to discussion of rising and falling mercury in experiment XVIII.  Cf. `Defence', part II, chap 3, where John Ball is credited with similar experiments.\r\nHand: 1650s</dc:description>
  <dc:date>1650s or early 1660s</dc:date>
</rdf:Description>