Otocousticon
Date
3 September 1668
Creator
Unknown, Artist
Object type
Archive reference number
Manuscript page number
p1
Material
Dimensions
height (page): 230mm
width (page): 180mm
width (page): 180mm
Subject
Content object
Description
Figures of an 'otocousticon' which one Mr Watkins at Christ Church, who was 'deafish', used as a hearing aid. John Wallis described it in his letter dated 3 September 1668 to Henry Oldenburg.
There is a sketch of a similar instrument by Isaac Newton (EL/N1/49/001) from 1675.
There is a sketch of a similar instrument by Isaac Newton (EL/N1/49/001) from 1675.
Transcription
I have given a rude draught of it in ye margin; but will not undertake yt ye proportions are exact, having nothing to direct mee but an Idea in my memory of so many years tsanding.
Transcribed by the Making Visible project
Transcribed by the Making Visible project
Related fellows
John Wallis (1616 - 1703, British) , Mathematician
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
Associated place