They are only sharp-cutting active points which can become violent. The exact observer, Mead, a celebrated English physician, saw through a microscope the liquor shot from the gums of irritated vipers. He pretends that he has always found them strewn with these cutting, pointed blades, the immense number of which tear and pierce the internal membranes. The cantarella, of which it is pretended that Pope Alexander VI. and his bastard, the duke of Borgia, made great use, was, it is said, the foam of a hog rendered furious by suspending him by the feet with his head downwards, in which situation he was beaten to death; it was a poison as prompt and violent as that of the viper. A great apothecary assures me that Madame la Tofana, that celebrated poisoner of Naples, principally made use of this receipt; all which is perhaps untrue. This science is one of those of which we should be ignorant. Poisons which coagulate the blood, instead of tearing the membranes, are opium, hemlock, henbane, aconite, and several others. The Athenians became so refined as to cause their countrymen, condemned to death, to die by poisons reputed cold; an apothecary was the executioner of the republic. It is said that Socrates died very peacefully, and as if he slept: I can scarcely believe it. I made one remark on the Jewish books, which is, that among this people we see no one who was poisoned. A crowd of kings and priests perished by assassination; the history of the nation is the history of murders and robberies; but a single instance only is mentioned of a man who was poisoned, and this man was not a Jew--he was a Syrian named Lysias, general of the armies of Antiochus Epiphanes. The second Book of Maccabees says that he poisoned himself--"_veneno vitam finivit_;" but these Books of Maccabees are very suspicious. My dear reader, I have already desired you to believe nothing lightly. What astonishes me most in the history of the manners of the ancient Romans is the conspiracy of the Roman women to cause to perish by poison, not only their husbands, but the principal citizens in general. "It was," says Titus Livius, "in the year 423 from the foundation of Rome, and therefore in the time of the most austere virtue; it was before there was any mention of divorce, though divorce was authorized; it was when women drank no wine, and scarcely ever went out of their houses, except to the temples." How can we imagine, that they suddenly applied themselves to the knowledge of poisons; that they assembled to compose them; and, without any apparent interest, thus administered death to the first men in Rome?