Arrhenicum,1749 too, is procured from the same sources. The best in quality is of the colour of the finest gold; that which is of a paler hue, or resembling sandarach, being less esteemed. There is a third kind also, the colour of which is a mixture of that of gold and of sandarach. The last two kinds are both of them scaly, but the other is dry and pure, and divides into delicate long veins.1750 This substance has the same virtues as the one last mentioned, but is more active in its effects. Hence it is that it enters into the composition of cauteries and depilatory preparations. It is also used for the removal of hangnails, polypi of the nostrils, condylomatous tumours, and other kinds of excrescences. For the purpose of increasing its energies, it is heated in a new earthen vessel, until it changes its colour.1751

Summary.—Remedies, one hundred and fifty-eight. Facts, narratives, and observations, nine hundred and fifteen.

Roman Authors quoted.—L. Piso,1752 Antias,1753 Verrius,1754 M. Varro,1755 Cornelius Nepos,1756 Messala,1757 Rufus,1758 the Poet Marsus,1759 Bocchus,1760 Julius Bassus1761 who wrote in Greek on Medicine, Sextus Niger1762 who did the same, Fabius Vestalis.1763

Foreign Authors quoted.—Democritus,1764 Metrodorus1765 of Scepsis, Menæchmus1766 who wrote on the Toreutic art, Xenocrates1767 who did the same, Antigonus1768 who did the same, Duris1769 who did the same, Heliodorus1770 who wrote on the Votive Offerings of the Athenians, Pasiteles1771 who wrote on Wonderful Works, Timæus1772 who wrote on the Medicines derived from Metals, Nymphodorus,1773 Iollas,1774 Apollodorus,1775 Andreas,1776 Heraclides,1777 Diagoras,1778 Botrys,1779 Archidemus,1780 Dionysius,1781 Aristogenes,1782 Democles,1783 Mnesides,1784 Xenocrates1785 the son of Zeno, Theomnestus.1786