'The czarina, ever anxious for the fortune of her own son, did not suffer the czar to rest till she had obliged him to commence the proceedings against the czarowitz, and to prosecute that unhappy prince to death: and, what is still more extraordinary, the czar, after having given him the knout (which is a kind of torture) with his own hand, was himself his executioner, by cutting off his head, which was afterwards so artfully joined to the body, that the separation could not be perceived, when it was exposed to public view. Some little time afterwards, the czarina's son died, to the inexpressible regret of her and the czar. This latter, who had beheaded his own son, coming now to reflect, that he had no successor, grew exceedingly ill-tempered. Much about that time also, he was informed, that his spouse, the czarina, was engaged in a secret and criminal correspondence with prince Menzikoff. This, joined to the reflection, that she had been the cause of his putting to death with his own hand his eldest son, made him conceive a design to strip her of the imperial honours, and shut her up in a convent, in the same manner as he had done his first wife, who is still living there. It was a custom with the czar to keep a kind of diary of his private thoughts in his pocket book, and he had accordingly entered therein a memorandum of this his intention. The czarina having found means to gain over to her interest all the pages of the czar's bed-chamber, one of them finding his pocket-book, which he had carelessly left on the table, brought it to Catherine, who upon reading this memorandum, immediately sent for prince Menzikoff, and communicated it to him, and, in a day or two afterwards, the czar was seized with a violent distemper, of which he died. This distemper was attributed to poison, on account of its being so sudden and violent, that it could not be supposed to proceed from a natural cause, and that the horrible act of poisoning was but too frequently used in Russia.'
These accusations, thus handed down by Lamberti, were soon spread throughout Europe; and, as there still exist a great number of pieces, both in print and manuscript, which may give a sanction to the belief of this fact to the latest posterity, I think it is my duty to mention, in this place, what is come to my knowledge from unexceptionable authority.