In other places we find the same causes actively at work, producing cholera. The seizures have been mainly in the districts notorious for bad sanitary arrangements. In every case we find that the track of cholera has been identical with that of fever. In a report just published by the Board of Health ample evidence is supplied that the seats of fever are also the seats of cholera. The first decided case in London occurred in a court that had been specially pointed out to the Sanitary Commissioners. In the town of Uxbridge four cases occurred last October, marked by the unequivocal characteristics of Asiatic cholera. One of the persons lived in a house notoriously insalubrious, and in which some cases of malignant fever had proved fatal. In relation to it the medical man had said, that if ever cholera visited Uxbridge, he believed the first case would be in that house. The conditions upon which cholera extends are everywhere the same. They establish most clearly the connection between a low sanitary condition and disease,—between filth and fever; and show that the two diseases, although rarely, if ever, found in the same district together, are twins from the same parent stock. They have, no doubt, a common origin. One word on the attacks of typhus. How is it that we are stirred into activity by an invasion of cholera? that we feel so much alarm? It is proved that the mortality from attacks of cholera, during its visitation in 1831–2, was not greater altogether than the average annual mortality occasioned by typhus. The effects of the latter disease are still more serious than those of cholera. And yet we sit down with the latter, and become reconciled to its existence, _because it is common and always with us_. If the sanitary evils which have been proved to exist almost universally were removed, cholera and typhus would scarcely be known amongst us; and yet “the annual slaughter in England and Wales, _from preventable causes of typhus_, which attacks persons in the vigour of life, appears to be double the amount of what was suffered by the allied armies in the battle of Waterloo.” Every day, disease and death arise from the presence of filth, from bad water, or overcrowding. They are put down in the bills of mortality as deaths by typhus, scarlatina, consumption, &c.—the true report would be, _poisoned by bad air_, _killed by public neglect_. It would not be too much to say that they are sacrificed to the indolence, incapacity, or waywardness of the public authorities. To justify this view of the case, I may quote, from the report just referred to, a passage in relation to Dumfries. This town had suffered most severely in 1832. I believe at that time the cholera attacked one-eleventh of the entire population, and destroyed one-seventeenth.