Dans ce livre, L onhardy pr sente les derni res d couvertes dans le domaine de la chimie de l'air et du feu. Il d crit les nouvelles esp ces d'air d couvertes et leur influence sur les r actions chimiques. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations...