[manuscript additions to printed form letter]
Augt 13th 1840
I beg to inform you that James Stirling of Dundee Engineer & the Revd Robert Stirling. D.D. of Galston Ayrshire, are applying for a Patent for Certain Improvements in Air Engines.<1>
Should you consider that the above will interfere with your caveat An Answer post paid is requested within Seven days from the date hereof otherwise the Patent will proceed
I am Your Obdt Servt
N.B. The fees for opposing must be paid at the time of entering opposition.
Patents solicited & all business relating thereto conducted with attention.
W. H. F. Talbot Esqre
1. Rev Dr Robert Stirling (1790-1878) of Galston, Ayrshire, designed an engine that recycled waste heat. His second patent, in 1840, was taken out jointly with his brother, James Stirling, a Dundee Engineer who employed a working engine in his factory. [See also Doc. No: 04124 and Doc. No: 04132].