ADDITION

AUTHORS

Known only since the printing of this Catalogue.

Petrus CASTELLI, Chemical Response on the effervescence and change of colors in the mixing of chemical liquids, quarto. Messina, 1654. One sees that chemistry is also practiced in Sicily, but it is likely medicinal chemistry, for I doubt that the madness of Hermetic Chemistry has spread in this kingdom. This author has provided 18 or 20 other very curious treatises on subjects of natural history.

Reflections concerning the Alchaest liquid, octavo. Frankfurt, 1708, in German. It is here that all the philosophers stop; they know the entire process of the Hermetic Science, but they cannot find this true Alchaest the universal solvent or natural dissolvent.

Joannes Andreas CRAMER, Elements of the Art of Assaying, comprised in two volumes, the first containing the theory, the second the practice based on the true nature of fossils, octavo. Leiden, 1730, 2 volumes. This author is the one among all the metallurgists who has treated the subject of the testing of metals and minerals most thoroughly: it is worth much more