<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/NLB/64/515" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [Francis William] Aston, FRS</dc:title>
  <dc:description>Informing that a paper on "A Critical Search for a Heavier Constituent of the Atmosphere by means on the Mass-spectrograph" has been put down for reading</dc:description>
  <dc:date>30 April 1923</dc:date>
</rdf:Description>