Typhus, that universally diffused affliction, is attributed by the official report on the sanitary condition of the working- class , directly to the bad state of the dwellings in the matters of ventilation, drainage, and cleanliness. This report compiled, it must not be forgotten, by the leading physicians of England from the testimony of other physicians, asserts that a single ill-ventilated court, a single blind alley without drainage, is enough to engender fever, and usually does engender it especially if the inhabitants are greatly crowded. This fever has the same character almost everywhere, and develops in nearly every case into specific typhus. It is to be found in the working-people's quarters of all great towns and cities, and in single ill-built, ill-kept streets of smaller places, though it naturally seeks out single victims in better districts also. In London it has now prevailed for a considerable time; its extraordinary violence in the year 1837 gave rise to the report already referred to. According to the annual report of Dr Southwood Smith on the London Fever Hospital, the number of patients in 1843 was 1,462, or 418 more than in any previous year.
...
p.129 That the dwellings of the workers in the worst portions of the cities, together with the other conditions of life of this class, engender numerous diseases, is attested on all sides.
p.159: Thus the social order makes family life almost impossible for the worker. In a comfortless, filthy house, hardly good enough for mere nightly shelter, ill-furnished, often neither rain-tight nor warm, a foul atmosphere filling rooms overcrowded with hum an beings, no domestic comfort is possible. The husband works the whole day through, perhaps the wife also and the elder children, all in different places; they meet night and morning only, all under perpetual temptation to drink; what family life is possible under such conditions?
From the annual criminal tables of the Home Secretary, it is evident that the increase of crime in England has proceeded with incomprehensible rapidity. The numbers of arrests for criminal offences reached in the years..
http://www.mdx.ac.uk/WWW/STUDY/xeng1845.htm#37