Instructions, 'Advice about a concealed way of writing' by Henry Oldenburgh [Oldenburg]

Reference number: CLP/24/41

Date: 17th century

Description

Oldenburgh provides instructions on how to conceal messages. Notes the ingredients and method required to create a white ink, with which to write the 'secret' lines; a black ink, with which to cover up those lines, and; a substance with which to blot out the black ink and make the former lines visible.

Subject: Chemistry

Reference number: CLP/24/41
Earliest possible date: 17th century
Physical description: Ink on paper
Page extent: 1 page
Format: Manuscript

Creator name

Henry Oldenburg

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Citation

Henry Oldenburg, Instructions, 'Advice about a concealed way of writing' by Henry Oldenburgh [Oldenburg], 17th century, CLP/24/41, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/clp_24_41/instructions-advice-about-a-concealed-way-of-writing-by-henry-oldenburgh-oldenburg, accessed on 04 December 2024

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https://makingscience.royalsociety.org/items/clp_24_41/instructions-advice-about-a-concealed-way-of-writing-by-henry-oldenburgh-oldenburg

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Hierarchy

This item is part of:

Classified papers of the Royal Society
1660-1741 Reference number: CLP
Classified papers: volume 24, papers of John Collins, Henry Oldenburg, Robert Hooke, mathematics
17th century Reference number: CLP/24

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Henry Oldenburg
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Classified Papers

Dates: 1592-1741

The 'Classified Papers' of the Royal Society are papers from British and international natural philosophers and scholars categorised according to subject areas.

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