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Perman writes: 'The main purpose of my work on this subject was to discover if bromine had any tendency to dissociate at low pressures, i.e., down to about 15 mm. of mercury, and at moderate tem peratures. The subject was suggested by Professor [William] Ramsay, to whom I am greatly indebted for constant advice and assistance in carrying out the work.'

Annotations in pencil and ink. Includes three pages of diagrams of experimental apparatus.

Subject: Chemistry

Received 17 April 1890. Read 8 May 1890. Communicated by Ramsay.

A version of this paper was published in volume 48 of the Proceedings of the Royal Society as 'Experiments on vapour-density'.

Reference number
Earliest possible date
Physical description
Ink and graphite pencil on paper
Page extent
31 pages

Creator name

Edgar Philip Perman

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Edgar Philip Perman, Paper, 'Experiments on vapour-density' by Edgar Philip Perman, 1890, PP/16/3, The Royal Society Archives, London,, accessed on 18 July 2024

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  • Proceedings Papers

    Dates: 1882 - 1894

    The archival collection known as 'Proceedings Papers' is comprised of manuscripts and occasional proofs of scientific papers sent to the Royal Society which were read before meetings of Fellows and printed in full in the Proceedings of the Royal Society.

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