Upon this point Mr. Darbyshire, before quoted, says, speaking of his work at Manchester, “the Slaughter-houses are well lighted from the roofs, top lights being superior to side lights for purposes of slaughtering.” All the Markets recently constructed by the Corporation of London are similarly lighted and ventilated, and at the Abattoir in Edinburgh the whole of the ventilation is carried on by large ventilators, and other contrivances, in the roof. BYE-LAW IX. That each Slaughter-house and Pound be thoroughly washed over the entire surface of the walls to the height of 7 feet 6 inches, and over the whole surface of the floor directly after slaughtering is completed, or at least once in every twenty-four hours. OBJECTIONS. _The substance of the objections raised is that the requirements for washing are too stringent, with a reiteration of the grievance of a dado 7 feet 6 inches; also the Butchers find it “difficult to imagine why the walls and floor of the Pound, as well as those of the Slaughter-houses, are to be washed after slaughtering,” and seem to imagine that the washing is required every twenty-four hours, including Sundays, whether slaughtering is going on or not._ REPLY. The provision for thoroughly cleansing, once in each twenty-four hours, Slaughter-houses and Pounds that are in constant use, is too obviously necessary to require any defence, and the quibble raised by the Butchers about Sunday cleaning is, I presume, intended as a joke. BYE-LAW X. That the internal surface of the roofs and upper portions of the wall of the Slaughter-houses and Pounds above the 7 feet 6 inches of impermeable surface be washed with quicklime at least once every month. OBJECTIONS. _That the requirements for the limewhiting are excessive, and that, if insisted upon, would be “oppressive and useless.”_ REPLY. I am of opinion that this Bye-law may be relaxed, and that it will suffice if the _monthly_ limewhiting be required in the _summer_ only, say from May to October; and once in _three_ months in the colder seasons, say November to April. The necessity for this periodical cleansing with lime would be made abundantly clear if the Local Government Board would send one of their own Medical Inspectors to see the places as now existing; who would be astonished, as your Committee were, to observe the foul, black, sooty, and greasy state of all that is left of the ruins of the timbers originally forming the roofs of some of the Slaughter-houses in Aldgate, and perhaps concur in remarks freely expressed by outsiders, that no regulations can be too stringent for the management of a business, which under the most careful supervision and with every intelligent precaution, is repulsive and offensive to the senses.