Letter from Frank Philip Bowden, on a paper 'The dielectric behaviour of vapours adsorbed on activated silica gel' by R McIntosh, Eric Keightley Rideal and J A Snelgrove, to D C Martin, assistant secretary of the Royal Society Paper reference code: A26 Bowden now recommends the paper to be published in the Proceedings as the paper has been cut to less than half its length and much improved. Written at University of Cambridge, Department of Physical Chemistry [England]. [Published in Proceedings A, 1951]. Endorsed on recto as received 30 April 1951. 28 April 1951