Our last post brought me your favor of the 11th informing me that the American Philosophical society had again done me the honor of electing me to their Presidential chair. I feel continued gratitude for these repeated marks of their good will, & consider them as renewed obligations to devote myself to their service in any way in which they can make me useful. I regret indeed that the occasions are so infrequent. in doing me the favor of conveying to the society a repetition of my thanks, I pray you to accept for yourself the assurances of my great esteem & respect.

Th: Jefferson