I should much sooner have acknowledged your favor 19th July if I had not thought it most proper to wait until I should recieve Mr Vaughn's communication. This not having taken place, I can no longer withhold from the American philosophical Society the expression of my thanks for the distinguished honor they have conferred on me by the election you have been pleased to announce.

     Whatever can be accomplished by an anxious Solicitude to render myself a useful member of this respectable & learned body, I can safely promise. I am Sir very respectfully Yr mo. ob. Servt