28 B Albemarle Street
March 31 1862
Dear Tyndall
I see in my County Newspaper2 received this morning that a magnificent block of “pure white rock salt” has been obtained from the mines of Messrs. Fletcher and Rigby of Marston near Northwich.3 It is stated to be 4½ and is destined for exhibition at the International.4 I advise you to keep your eye upon it, and if it should be pure enough for your purposes I will do what I can to procure you a cut of it.
Believe me | yours very truly | [Philip Grey–]Egerton
RI MS JT/1/E/100
Sir Philip de Malpas Grey-Egerton: (1806–81), 10th baronet, politician and palaeontologist (ODNB).
my County Newspaper: Possibly referring to Anon, ‘Contributions from Cheshire to the great exhibition’, Cheshire Observer and General Advertiser: for Cheshire and North Wales, 29 March 1862, p. 5.
Northwich: town and civil parish in Cheshire, England.
exhibition at the International: The International Exhibition or Great London Exposition ran from 1 May to 1 November 1862 and was based adjacent to the gardens of the Royal Horticultural Society.
Please cite as “Tyndall1876,” in Ɛpsilon: The John Tyndall Collection accessed on