The Chevr. Castiglioni, who will deliver you this Line, is an Italian Gentleman of Character and Family, from Milan. He proposes a Tour thro’ all our States. I beg leave to recommend him to your Civilities, and that you would introduce him to the Acquaintance of such of our Society as have a Tincture of Natural History and Botany in which he is particularly curious. With great Esteem, I am ever, my dear Friend, Yours most affectionately