Internal sizing, a new step
With the paper machine, it became urgent to modernise sizing. How could such long sheets be manually be dipped in a gelatine bath? Barthélémy and Etienne de Canson develop a sticky wax-based product which is mixed into the paper pulp.
The technological revolution also spreads to railroads with the commissioning of the Saint-Etienne-Andrézieux line, the first in the European rail network.