by reductions of existing burdens, and might be rendered productive of general advantage, if due means, guided by science, and applied by properly qualified officers, be resorted to. The impediments arising from the existing state of the law and of its local administration, form a subject for separate representation. Before stating the cost in life and money attributable to the noxious causes external to the dwelling, it is desirable to notice other noxious causes, within the recognised province of legislative interference, that appear to be similarly under control, namely, the overcrowding of places where large numbers are assembled together, such as the overcrowding of places of work. III.—CIRCUMSTANCES CHIEFLY IN THE INTERNAL ECONOMY AND BAD VENTILATION OF PLACES OF WORK; WORKMEN’S LODGING-HOUSES, DWELLINGS, AND THE DOMESTIC HABITS AFFECTING THE HEALTH OF THE LABOURING CLASSES. The evils arising from the bad ventilation of places of work will probably be most distinctly brought to view, by the consideration of the evidence as to its effects on one particular class of workpeople. The frequency of cases of early deaths, and orphanage, and widowhood amongst one class of labourers, the journeymen tailors, led me to make some inquiries as to the causes affecting them; and I submit the following evidence for peculiar consideration, as an illustration of the operation of one predominant cause;—bad ventilation or overcrowding, and the consequences on the moral habits, the loss of healthful existence and happiness to the labourer, the loss of profit to the employer, and of produce to the community, and the loss in expenditure for the relief of the destitution, which original cause (the bad ventilation) we have high scientific authority for stating to be easily and economically controllable. _Mr. Thomas Brownlow_, tailor, aged 52:— “It is stated that you have been a journeyman tailor, and now work for yourself. At what description of places have you worked?—I have always worked at the largest places in London; one part of my time I worked at Messrs Allen’s, of Old Bond-street, where I worked eight years; at another part of my time I worked at Messrs. Stultze’s, in Clifford-street, where I worked four years. At Messrs. Allen’s they had then from 80 to 100 men at work; at Messrs. Stultze’s they had, when I worked there, about 250 men.