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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MS/257/3/150" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter from Morton, Observatory Cottage, Cape of Good Hope to Edward Sabine</dc:title>
  <dc:description>Discussion regarding Morton’s plan for the observations. Refers to the moons passage and the mean time of the sun’s passage. Discussion regarding the moon’s influence. Refers to the unifilar, changes in declination, maximum and minimum dip. Discussion regarding the suspension of the needle and thread. Refers to the Greenwich photographic system.</dc:description>
  <dc:date>20 January 1854</dc:date>
</rdf:Description>