A plan of the subliming furnace or oven for making Sal Ammoniac in Egypt
Date
1760
Creator
Unknown, Artist
Object type
Archive reference number
Manuscript page number
p151
Material
Dimensions
height (paper): 201mm
width (paper): 170mm
width (paper): 170mm
Subject
Description
Frederik Hasselqvist, Linnaeus's student,visited Egypt and reported that sal ammoniac was made there from the soot from the burnt dung of quardupeds. The Egyptians built 'an oblong oven, about as long again as broad, of brick and moist dung, of such a size, that the outside, or flat part of the top of the arch, may hold fifty glass vessels, ten in length and five in breadth, each vessel having a cavity left for it in the brick-work of the arch' ('The Method of Making Sal Ammoniac in Egypt', Philosophical Transactions of the Royal Society, vol. 51 (1760), p. 505).
Transcription
Tab XI p. 505
Transcribed by the Making Visible project
Transcribed by the Making Visible project
Object history
Drawing for Frederik Hasselqvist, 'The Method of Making Sal Ammoniac in Egypt', Phil. Trans., vol. 51 (1760), pp. 504-06, tab. 11, communicated by Carl Linnaeus.
Related fellows
Carl Linnaeus (1707 - 1778, Swedish) , Botanist
Associated place