Th: Jefferson presents his thanks to mr Sterry for the pamphlet he was so kind as to send him on the method he proposes of working the Lunar observations. whatever will simplify or facilitate the operations for ascertaining the longitude in that way, is worthy the attention of the friends of science & of humanity. the other duties of Th:J. forbid his indulging himself in pursuits of this kind, nor indeed is he familiar enough with that particular branch of practical astronomy to decide on the merits of the several methods of operation. he wishes success however to mr Sterry’s pursuits in that line, and ascribing to them just praise, he salutes him with respect.