Dear Sir
I think the use of the Sulphuret of Gold or of Silver <illegible deletion> P would be an infringement of Mr Elkintons <1> last patent if used in the manner claimed under the fifth part of Mr Barratts <2> Specification
Your obdt St
William Carpmael
Lincolns Inn
Mar 15th 1842
W H F Talbot Esq
W. H. F. Talbot Esq
Lacock Abbey
Chippenham
Notes:
1. Probably a misspelling ‘Elkington’, the surname of Henry and George Richards whose 1840 patent, number 8447, was entitled ‘Coating, covering, or plating certain metals’.
2. Probably Oglethorpe Wakelin Barratt whose 1838 patent, number 7742, was entitled ‘Coating and colouring (qy. covering) certain metals’.