Cet ouvrage est une compilation de lettres échangées entre deux grands noms de la chimie: Charles Gerhardt et Justus von Liebig. Les auteurs y discutent des avancées récentes de la chimie et de leur application à l'industrie, à la physiologie et à l'agriculture. Cette oeuvre est un témoignage fascinant de la façon dont la science s'est développée au XIXe siècle.

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