I have the honor of sending my greetings, my illustrious doctor, and of asking what you and M. your grandson have decided concerning de Montgolfier's experiment. The weather does not look propitious, but since the fog is now dissipating, one might expect clearer skies around noon. Should M. your Grandson take you, you would need to depart at three because the location set for the experiment is even further away than M. de Montalembert's.