Böcker av Balthazar Georges Sage

Ce livre est une référence pratique pour les orfèvres et les métallurgistes. Il décrit les techniques de coupellation, un test utilisé pour déterminer la pureté des métaux précieux tels que l'or et l'argent. Ce livre est une source importante de connaissances pour les amateurs et les professionnels de l'orfèvrerie et de la métallurgie.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. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.