Preston and Oldham, in Lancashire, are supplied with water from surface drainage on the neighbouring hills, and there was scarcely any cholera at either of these places in 1849. The greater part of the town of Paisley is supplied in a similar way; and I was informed that the cases of cholera which occurred there in 1849 were confined to a quarter of the town to which this supply of water does not extend. Nottingham is supplied with filtered water obtained from the river Trent, some distance above the town. In 1832 this supply did not extend to all the inhabitants, and the cholera was somewhat prevalent amongst the poor, of whom it carried off 289; the population of the town being 53,000. After that time the water was extended copiously to all the inhabitants, and there were but thirteen deaths from the epidemic in 1849. The local Sanitary Committee placed the supply of water amongst the chief causes of this immunity from cholera, and I believe justly. There were but seven deaths from cholera in Nottingham last summer. [Sidenote: CHOLERA IN GLASGOW.] Glasgow has been supplied, since the early part of the present century, with the water of the Clyde, obtained a little way above the town, but within the influence of the tide, and consequently mixed with the contents of the sewers. It is imperfectly filtered through sand. In 1847, however, the parish of Gorbals, which forms the south part of Glasgow, was furnished with a supply of water collected on the neighbouring hills; and Dr. Leech, of Glasgow, speaks as follows respecting the influence of this water on the prevalence of cholera: “During the late cholera there was a remarkable circumstance, which deserves notice as compared with the epidemic of 1832. Since the former period, the population of Glasgow, south of the Clyde, has nearly doubled; and with this exception, and the introduction of the soft-water supply, the circumstances might be considered as the same at both periods. In one district, the parish of Gorbals, the attack in 1832 was fearful; while Glasgow, north of the Clyde, also suffered severely. During the late epidemic [that of 1848–49], Gorbals parish furnished comparatively a small number of cases; while the epidemic in other parts of Glasgow was very severe. The unanimous opinion of the Medical Society was, that this comparative immunity was to be attributed to the soft-water supply.”[22] [Sidenote: CHOLERA IN NEWCASTLE.] I was informed that when the cholera was prevalent in Glasgow last winter, the parish of Gorbals again enjoyed a similar immunity from the disease.