“The perfect immunity from deaths by _febrile_ and _acute_ diseases, enjoyed by Lemon-street during the long period of three years and a half, is a strong testimony to the value of the breadth of its roadway, the openness of its site, and the judicious construction of the houses; for it has to contend with a great deficiency of sewerage. Fairmantle and Daniell-streets are modern, and are occupied by small traders, and by decent artisans and labourers; the _former_ lies rather low, the _latter_ is on a considerable elevation; both are fairly drained, and are healthy. Charles, Calenick, and Kenwyn-streets present some of the worst specimens of defective arrangement, rendered worse still by the recklessness of the very poor, which can be met with in Truro. The amount of _pauper sickness_ is considerable, the deaths not few. The two latter streets are, in the greater part of their length, but little raised above high-water mark. Passing into _St. Mary’s_ parish, the proportion of sickness and even of deaths in Castle-street and Castle-hill is, to their extent and population, as great, perhaps, as that of any part of Truro; yet their situation is elevated and favourable. There is, however, no mystery in the causation. Ill-constructed houses, many of them old, with decomposing refuse close upon their doors and windows, open drains bringing the oozings of pigsties and other filth to stagnate at the foot of a wall, between which and the entrances to a row of small dwellings there is only a very narrow passage; such are a few of the sources of disease which the breeze of the hill cannot always dissipate. Similar causes have produced like effects in the courts adjacent to Pyder-street, to the High Cross, and to St. Clement’s-streets, and in Bodmin-street and Good-wives’-lane, the situations being all more or less confined. The benefits, on the other hand, derived from open rows, and cottages of a better construction are evidenced in Boscawen and Paul’s-row, and St. Clements’-terrace, which are well ventilated, and consequently suffer less from the scanty provision of drains and other conveniences.