Tout le monde sait que l'Allemagne possede en ce genre des tresors
qui ont ete jusqu'ici comme enfouis pour la France.

2. _Mineralogie ou Description generale du regne mineral par
J. G. Wallerius_ (Paris, Durand, 1753) followed by _Hydrologie_
by the same author. Second edition, Paris, Herrissant, 1759.
Originally in Swedish (Wallerius was a professor of chemistry
in the University of Upsala). German translation by J. D. Denso,
Professor of Chemistry, Stargard, Pomerania. Holbach's translation
was made from the German edition which Wallerius considered
preferable to the Swedish. He was assisted by Bernard de Jussien
and Rouelle, and the work was dedicated to a friend and co-worker
in the natural sciences, Monsieur d'Arclais de Montamy.

3. _Introduction a la Mineralogie... oeuvre posthume de
M. J. F. Henckel_, Paris, Cavelier, 1756, first published under title
_Henckelius in Mineralogia redivivus_, Dresden, 1747, by his pupil,
M. Stephani, as an outline of his lectures. Holbach's translation
made from a German edition, corrected, with notes on new discoveries
added.

4. _Chimie metallurgique... par M. C. Gellert_. Paris, Briasson,
1758, translated earlier. Approbation May 1, 1753, Privilege
Dec. 21, 1754. Originally a text written by Gellert for four
artillery officers whom the King of Sardinia sent to Freyburg to
learn mining-engineering.

5. _Traites de physique, d'histoire naturelle, de mineralogy et
de metallurgie_. Paris, Herrissant, 1759, by J. G. Lehmann, three
vols. I. L'Art des Mines, II. Traite de la formation des metaux,