An undated photostat of a letter in French from Monsieur Jeaurat to Nevil Maskelyne, 16 November 1775, informing him of his interest in Maskelyne's work on the attraction of mountains and his disagreement with J. de Lalande's publishing of the work. He proceeds to describe a series of public lectures that he has attended recently on subjects ranging from early astronomy to the use of saltpetre.