Sewerage and Sanitary Works.—­The disposal of the sewage of a large town away from the sea or tidal rivers has at all times been a source of difficulty, and Birmingham forms no exception to the rule.  When it was in reality but the little “hardware village” it has so often been called, the Rea was sufficient to carry off the surface waters taken to its channel by the many little rills and brooks of the neighbourhood, but as the town increased, and house drainage defiled that limped stream, it became necessary to construct culverts, so as to take the most offensive portion of the sewage to a distance from inhabited houses.  A great improvement was looked for after the introduction of the Waterworks, allowing the use of water-flushed closets in the better class of houses, instead of the old style of accommodation usually provided at the end of the garden, but even this system became a nuisance, especially to residents near the river Tame, the receptacle of all liquid filth from our streets, closets, middens, and manufactories, and legal as well as sanitary reasons forced upon the Corporation the adoption of other plans.  Our present sanitary system comprises the exclusion, as far as possible, of closet refuse and animal and vegetable matters from the sewers, and secondly, the purification by filtration, &c., of the outpourings of the sewers, after the partial separation therefrom of the more solid constituents.  In 1871, when the real sanitary work of the borough may be said to have practically commenced, out of about 73,200 houses only 3,884 were provided with water-closets, the remainder being served by middens, drained and undrained, the greater part uncovered and polluting the atmosphere, while the soakage fouled the earth and contaminated the wells.  From these places in 1873 there were removed 160,142 loads of ashes, &c., the number of men employed being 146, and the cost, allowing for sales, over L20,000, or L55 10s. per 1,000 of the Population.  In the following year the Council approved of “the Rochdale system,” closet-pans and ash-tubs taking the place of the old style with middens, the contents being removed weekly instead of being left to accumulate for months.  At first the new system was far from perfect, and met with much opposition, notwithstanding the certainty of its being a more healthy plan than the old one; but improvements have been made, and it is now generally confessed that the pans and tubs are the right things in the right places.  The number of pans in use in 1874 was 3,845; in 1875, 7,674; in 1876, 15,992; in 1877, 22,668; in 1883, 37,287, equal to a collection of 1,900,000 pans per year.  The sanitary force now numbers 622 men, who, in addition to the above, removed in 1883, from tubs, middens, &c., 128,966 loads of ashes.  The chief depot for this accumulation of refuse and rubbish is at the Corporation’s wharf, in Montague Street, where over L52,000 has been laid out in buildings and machinery for its due disposal.