This will be delivered to you by an ingenious young Friend of mine, Mr. S. Vaughan, who travels with a View of improving himself in Mineralogy. He will be much oblig’d by the Informations and Counsels that you can give him; and as I have a great Regard for him, and for his Family—I earnestly recommend him to those Civilities which you are accustomed to show to Strangers of Merit. With sincere Esteem I am, my dear Friend, Yours most affectionately