\section{From Faesh, July 25, 1782} \begin{tabular}{|r|l|} \hline DATE:& July 25, 1782\\ \hline FROM:& Faesh\\ \hline TO:& BF \\ \hline PBF:& 37:676\EnDash{}7 \\ \hline \end{tabular} \begin{Intro} Jacques-Alexandre-C\'{e}sar Charles (1746\EnDash{}1823), once a petty functionary in the finance bureau, was inspired by reading BF's work to learn the elements of experimental physics and in 1781 began offering a public course of lectures. His eloquence and the precision of his experimental demonstrations attracted a wide audience, including members of the Academy of Sciences and BF himself on at least one occasion. \TODO{Who is Faesh???} \end{Intro} (Original French is below) Sir: I heard at Mr. Charles, Demonstrator of Physics, an armonica, belonging to Sr. Hulmandel, Professor of Music, who assured me that is was your Invention; I was enchanted and I die of desire to have my own; but despite all my research, I can not get one; would you the supplier kindly indicate the means of possessing of a musical instrument like it, more delightful than any I know in the world? I would be infinitely obliged to you. I have honor to be, with most respectful consideration, Sir, your very obedient servant, Faesh \MyRule Monsieur! J'ay entend\^{u} chez Monsr. Charles, D\'{e}monstrateur de Phisique, un harmonica, apartenant au Sr. Hulmandel, Professeur de musique, on m'a assur\'{e} qu'il \'{e}tait de v\^{o}tre Invention, j'en ay \'{e}t\'{e} enchant\'{e} \& je meurs d'Envie d'en poss\'{e}der un pareil, mais malgr\'{e} toutes mes recherches, je n'ay encore p\^{u} me le procurer, oserais-je vous Suplier de vouloir bien m'indiquer les moyens de parvenir à la possession d'un Semblable Instrument de musique, le plus D\'{e}licieux que je Connaise au Monde, Je vous en aurai une obligation infinie. J'ay l'honneur d'\^{e}tre avec la plus Respectueuse Consid\'{e}ration Monsieur! V\^{o}tre tr\`{e}s obeissant Serviteur. Faesh