2. Again, in very many parts of the City, you find illustrations of a constructional error to which I have adverted as in the highest degree pernicious to health. You find a number of courts, probably with very narrow inlets, diverging from the open street in such close succession, that their backs adjoin with no intermediate space whatsoever. Consequently, each row of houses has but a single row of windows, facing into the confined court; and thus there is no possibility of ventilation, either through the court generally, or through the houses which compose it. In the Out-Wards of Cripplegate, Farringdon, and Bishopsgate, examples of this arrangement are both most numerous, and I believe, most removable: but they may likewise be found in considerable numbers in the In-Wards of the City; _e.g._, in the neighbourhood of Printing-house-square, of Great Bell-alley, of Leadenhall-street, of Aldgate, of Skinner-street, and of St. Martin’s-le-Grand. In many of these cases, if the management of the property were under a single control, it is possible that effectual relief might be given, by converting any two rows of houses which are back to back, each having windows only on one side, into a single row of houses, with doors and windows both before and behind: and if changes of this nature were accompanied by the removal of an occasional house, or other impediment to the circulation of air, I would guarantee to your Hon. Court that the next year’s register would show a very large diminution in the local amount of preventable sickness and mortality. 3. In other cases, the immediate impediment to ventilation apparently consists in the operation of the window-tax. Your Hon. Court, at various times, has heard how unfortunate for the health of cities is this ill-chosen method of taxation, assessing the amount of rate for houses in proportion to their means of ventilation. You can easily conceive how much it would impede your endeavours to promote health and cleanliness within the City, if an additional direct tax were levied on houses by reason of their _drainage_; or if the assessor regulated his rate according to the _consumption of water_ for household purposes. The working of the window-tax is on this principle; and although it may be very true that health is the greatest of treasures, and that, on this ground, its means and appliances are eligible for taxation, I cannot but regret that a struggling population should be tempted by the hope of some small saving, to make a sensible diminution in their chances of life, by retrenching within the narrowest measures their inlets of ventilation and light. * * * * *