He made a periodic table of the elements established according to their atomic masses, and he pointed out the law of the octaves according to which every eight elements have similar properties.
International: Spain takes the Chincha Islands, with which the Spanish-South American War begins.
National: In Tabasco, Mexico are defeated and expelled the French invaders who leave the city of San Juan Bautista (today Villahermosa) being this, the first region from where the French invader of Mexico is expelled
