Reference numberCLP/9i/18/1
TitleManuscript, description of a Swedish stone, which affords sulphur, vitriol, allum and minium by G Talbot
DescriptionDescription of a stone imparted to Talbot in his capacity as Extrordinary Envoy in Demark and the process by which various useful minerals are extracted from it. 'There is a stone in Sweden of a yellow colour, intermixed with streaks of white (as if composed of gold and silver)'. There are different processes for extracting each compund from the stone over a period of years. Melting for sulphur, sun drying to the point of combustion and infusing with water for blue vitriol [copper sulfate], reuse of the infused water mixed with urine and ash to make alum, and baking the remaining sediment in home ovens to leave red minium powder [lead tetroxide] for painting and plastering.

Includes a small figure of an iron pot used in the process of sulphur extraction, appears in the margin of page 1 (see CLP/9i/18/2).

Read to the Royal Society on 23 May 1666

Subject: Mineralogy / Chemistry / Industry
Physical descriptionInk on paper
Access statusOpen
Related materialDOI: 10.1098/rstl.1665.0140
Printed in 'Philosophical Transactions' vol 1, no 21, p 375
Related records in the catalogueRBO/3/37
Fellows associated with this archive
NA6229Talbot; Sir; Gilbert (c1606 - 1695); diplomatc1606 - 1695
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