Letter – Michael Faraday to John Mulcaster – 1 Nov 1827

Document Type: Letter
Date: 1 Nov 1827
Correspondent: Michael Faraday
Recipient: John Mulcaster
Archive Source: NRO 672 E 1E 6
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Royal Institution Nov 1/1827

Having carefully examined the specimen of discoloured white Lead sent to me for that purpose I find that the tinge is produced by the presence of a small quantity of the <Sulphinet> – The quantity of <Sulphinet> present although of no importance as to its weight (being but an exceedingly small proportion of the whole) is still nevertheless sufficient owing to the intensity of its brown colour & its intimate diffusion through the whole to occasion the discoloration observed. It is occasioned by the presence of Sulphur in some of the materials or vessels and probably in the 

Lead itself.			M. Faraday
There is no addressee on this letter, but it was probably written to John Mulcaster as it is a similar letter (with similar subject matter) to the previous one in the letterbook from Thomas Thomson to Mulcaster dated 18 Oct 1827

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The Dukesfield Smelters and Carriers Project aimed to celebrate and discover the heritage of the Dukesfield Arches & lead carriers' routes between Blaydon and the lead mines of Allendale and Weardale. A two year community project, it was led by the Friends of the North Pennines in partnership with Hexhamshire and Slaley Parish Councils and the active support of Allendale Estates. It was funded by the Heritage Lottery Fund and the generous support of other sponsors. Friends of the North Pennines: Charity No:1137467