UK, 1822-1825: Wollaston's Rhodium

Kronberg, Coatsworth & Usselman (1981)* review the sales of Rhodium from Wollaston's Notebooks:

1822-5: 1 Troy Oz. Rhodium (intrinsic, producer)  = £ 15.00 (USD$ 72.-75)

*Ambix, Vol. 28, Pt 1, March 1981 pp.20-35 "The Artifact as Historical Document Part 2: The Palladium and Rhodium of W. H. Wollaston

1828: Doughty's Pens may have employed whatever Rhodium remained, after Wollaston's death.  The earliest notice appears in November 1825.




 



The c. 1825 price for Doughty Pens was £ 0.75, but declined -33% in the 1830s. 






1841: 
 

Richard & George Knight, c. 1817:

1825: Chlorplatinates were used in the treatment of syphilis.

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