BERZELIUS, Jöns Jacob. Des Changemens dans le système de minéralogie chimique, qui doivent nécessairement résulter de la propriété que possèdent les corps isomorphes, de se remplacer mutuellement en proportions indéfinies. (publié dans Annales de Chimie et de Physique - Tome XXXI). 1826.

First edition.
Berzelius is the first to propose a system of classification of the elements by designating them by an abbreviation of their Latin name. It is the system of naming atoms that we always use (Au for Gold for example). He also proposed in his System of mineralogy in 1818 a beginning of classification of simple and compound elements. In this article he modifies his system taking into account Mitscherlich's recent work on isomorphic crystals and proposes a new classification according to the electronegativity of the elements.

We find in the same volume an article by Antoine Becquerel, "Investigations on the electrical effects of contact produced in changes of temperature, and application which can be made to the determination of high temperatures".