Defrance's Opinion on Posts and Postal Services: Session 16 of Pluvios, Year V is an important work by the French statesman and educator Jean-Claude Defrance, which is devoted to discussing the organization of postal communication during the French Revolution. In his book, the author draws attention to the importance of postal services for society and resolves the issue of their improvement. The meeting of 16 Pluvios, year V, in which this problem is discussed, was an important step in the improvement of the postal service system in France. Defrance's book is a valuable source for the study of the history of postal communication and state reforms during the period of revolutionary changes in the country."