Prodromus of the Metallurgical Library

BIBLIOTHECA METALLICA.

[are described,] of which there are many, written in Spanish by Albaro Alonso Barba, translated by the R. H. Right Honourable Edward, Earl of Sandwich. 8vo London 1674.
8vo Ibid. 1669.

• Ej. Arte de los Metalles en que se ensenna el verdadero beneficio de los de oro, y plata por açogue el modo de Fundirlostodos y como se han de refinar, y apartar unos de otros. The same. The Art of Metals, in which the true method of extracting gold and silver by means of mercury is taught, the manner of smelting them all, and how they must be refined and separated from one another. 4to Madrid 1640. with figures. 1 Alphabet, 6 sheets.

Copy from Mr. von Leibniz’s own hand.

This book was obtained by the Earl of Sandwich, the English Ambassador in Spain, as an exceedingly great rarity. He began to translate it into English, but completed only 2 books, which were published after his death and also translated into German. Both the English and the German editors, as well as the readers, assumed that these two books comprised the entire work. However, after a Spanish copy finally came into my hands, I saw that three books were missing from that translation. Because this work is held in such high regard for its rarity even in Spain, I did not spare the effort to have the whole thing transcribed.

The preface of the English translation, which was translated into German, speaks of it as follows:

Now you hold in your hands a jewel, which is held in such high original: "hoch"