As in Italy, the first notice the government received of the prevalence of this crime was given by the clergy, to whom females of high rank, and some among the middle and lower classes, had avowed in the confessional that they had poisoned their husbands. In consequence of these disclosures, two Italians, named Exili and Glaser, were arrested, and thrown into the Bastille, on the charge of compounding and selling the drugs used for these murders. Glaser died in prison, but Exili remained without trial for several months; and there, shortly afterwards, he made the acquaintance of another prisoner, named Sainte Croix, by whose example the crime was still further disseminated among the French people.

The most notorious of the poisoners that derived their pernicious knowledge from this man was Madame de Brinvilliers, a young woman connected both by birth and marriage with some of the noblest families of France. She seems, from her very earliest years, to have been heartless and depraved; and, if we may believe her own confession, was steeped in wickedness ere she had well entered her teens. She was, however, beautiful and accomplished; and, in the eye of the world, seemed exemplary and kind. Guyot de Pitaval, in the Causes Célèbres, and Madame de Sévigné, in her Letters, represent her as mild and agreeable in her manners, and offering no traces on her countenance of the evil soul within. She was married in 1651 to the Marquis de Brinvilliers, with whom she lived unhappily for some years. He was a loose dissipated character, and was the means of introducing Sainte Croix to his wife, a man who cast a blight upon her life, and dragged her on from crime to crime till her offences became so great that the mind shudders to dwell upon them. For this man she conceived a guilty passion, to gratify which she plunged at once into the gulf of sin. She was drawn to its most loathsome depths ere retribution overtook her.

She had as yet shown a fair outside to the world, and found but little difficulty in effecting a legal separation from her husband, who had not the art to conceal his vices. The proceeding gave great offence to her family. She appears, after this, to have thrown off the mask completely, and carried on her intrigues so openly with her lover, Sainte Croix, that her father, M. D’Aubray, scandalised at her conduct, procured a lettre de cachet, and had him imprisoned in the Bastille for a twelvemonth.

Sainte Croix, who had been in Italy, was a dabbler in poisons. He knew something of the secrets of the detestable La Spara, and improved himself in them from the instructions of Exili, with whom he speedily contracted a sort of friendship. By him he was shown how to prepare, not only the liquid poisons employed in Italy, but that known as succession powder, which afterwards became so celebrated in France. Like his mistress, he appeared amiable, witty, and intelligent, and showed no signs to the world of the two fierce passions, revenge and avarice, which were gnawing at his heart. Both these passions were to be sated on the unfortunate family of D’Aubray; his revenge, because they had imprisoned him; and his avarice, because they were rich. Reckless and extravagant, he was always in want of money, and he had no one to supply him but Madame de Brinvilliers, whose own portion was far from sufficient to satisfy his need. Groaning to think that any impediment should stand between him and wealth, he conceived the horrid idea of poisoning M. D’Aubray her father, and her two brothers, that she might inherit the property. Three murders were nothing to such a villain. He communicated his plan to Madame de Brinvilliers; and she, without the slightest scruple, agreed to aid him: he undertook to compound the poisons, and she to administer them. The zeal and alacrity with which she set to work seem hardly credible. Sainte Croix found her an apt scholar; and she soon became as expert as himself in the manufacture of poisons. To try the strength of the first doses, she used to administer them to dogs, rabbits, and pigeons. Afterwards, wishing to be more certain of their effects, she went round to the hospitals, and administered them to the sick poor in the soups which she brought in apparent charity.² None of the poisons were intended to kill at the first dose; so that she could try them once upon an individual without fear of murder. She tried the same atrocious experiment upon the guests at her father’s table, by poisoning a pigeon-pie! To be more certain still, she next poisoned herself! When convinced by this desperate essay of the potency of the draught, she procured an antidote from Sainte Croix, and all doubts being removed, commenced operations upon her grey-headed father. She administered the first dose with her own hands, in his chocolate. The poison worked well. The old man was taken ill, and his daughter, apparently full of tenderness and anxiety, watched by his bedside. The next day she gave him some broth, which she recommended as highly nourishing. This also was poisoned. In this manner she gradually wore out his frame, and in