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Description

Plate 11 showing an instrument for sampling seawater at depth. The instrument has twin trapdoors within a weighted brass cylinder. The work is inscribed with publication and plate details. Not signed. Royal Society stamp verso.

Subject: Geodesy / Hydrography

Published in Philosophical Transactions as part of paper titled 'On the specific gravity, and temperature of sea waters, in different parts of the ocean, and in particular seas; with some account of their saline contents' by Alexander John Gaspard Marcet.

Read to the Royal Society on 20 May 1819.

Reference number
PT/73/7/11
Earliest possible date
1819
Physical description
Graphite on paper
Page extent
1 page
Format
Drawing

Creator name

Alexander John Gaspard Marcet

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Citation

Alexander John Gaspard Marcet, Drawing, machine for sampling seawater at depth by [LFM], 1819, PT/73/7/11, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/pt_73_7_11/drawing-machine-for-sampling-seawater-at-depth-by-lfm, accessed on 09 February 2026

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  • Philosophical Transactions

    The 'Philosophical Transactions' collection comprises manuscript versions of papers published in The Philosophical Transactions of the Royal Society, the world’s first and longest continuously running journal dedicated to science.

    Dates: 1802 - 1865

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