This reflection was not sufficient to do away the prejudice in its favour, so difficult is it to destroy a received opinion, howsoever false it may be. While the plague was raging at Moscow, many Russian gentlemen and foreigners had recourse to the smoking of tobacco, as an infallible preservative. Those who were accustomed to the pipe, smoked oftener, whilst others gradually brought themselves to bear it, until they saw some among the foreigners of the lower class carried off by the plague, in spite of the use of this remedy. The master chimney-sweeper at the foundling-hospital, who had formerly served in the Prussian army, had so much faith in the smoking of tobacco, that he was always seen with a pipe in his mouth from morning to night; and boasted that by this means he should be proof against the plague. Disregarding all other precautions, even when the disorder was at its height, (viz. the month of September) he got over the fences in the night-time, in order to go and see his wife and children who were in the town. He was immediately seized with head-ach and vomiting, and the next day he had a bubo in the groin and under the arm-pit, accompanied with great debility and fever. He died at the end of forty-eight hours. His apprentice, twelve years of age, had a large flat bubo under the armpit, and followed him soon after. From the account published by Count _Berchtold_ at Vienna, in 1797, it would appear that the best preservative method is that recommended by Mr. _Baldwin_, the British Consul at Alexandria. It consists simply in anointing the body all over with olive oil. According to the same account, friction with warm oil is not only a preservative, but also a curative remedy. See the second volume of _Duncan_'s Annals of Medicine. E. _Of the means by which the Foundling-hospital at Moscow was kept free from the Plague._ I shall now give a particular account of the means by which the Foundling Hospital was kept free from the plague, during the whole time that it raged at Moscow; in the last six months of which it swept off so many thousands of inhabitants. From this account it will easily be seen how possible it is in times of pestilence, to keep one's self, one's family, and whole buildings, not only private but public, free from infection.