 Lagrange was also one of the founding members of the Bureau des Longitudes in 1795.In 1795, Lagrange was appointed to a mathematical chair at the newly established École Normale, which enjoyed only a brief existence of four months.His lectures there were quite elementary, and contain nothing of any special importance, but they were published because the professors had to "pledge themselves to the representatives of the people and to each other neither to read nor to repeat from memory," and the discourses were ordered to be taken down in shorthand to enable the deputies to see how the professors acquitted themselves.