A great number of moveable iron “offal boxes” should be placed in different parts of the market, which must be cleared at least once a day, and the market should be frequently flushed and cleansed with water from hydrants fixed in different parts of the building. Many other points will no doubt suggest themselves to town surveyors, who have the important work of designing either cattle or general markets to undertake, but the few suggestions which have been given may be of some use. [229] The following is a description of the manner in which the sheep are penned in the cattle market of la Villette at Paris:--“The enclosures or pens are all of iron, those for the sheep have a centre railing 3 feet 3 inches high, and cross railings 1 foot 9 inches high; the former with three horizontal rails and vertical rods, and the latter two horizontal rails and vertical rods. There is a distance of 15 feet betwixt the high railings, which is divided into three by iron posts 21 inches high. The first row of these posts is placed at a distance of 3 feet from the low cross railing at the passage, the second row 18 inches from the first, the third 3 feet from the second, and so on. The sheep are placed in line side by side as close as they can stand, with their heads up to the low rail. A moveable hurdle of wood is then set on edge between the sheep in rear and the iron posts just described. A passage of 18 inches is left clear, and then another row of sheep and another passage, and so on. In this manner a great number of sheep are put into little space, in such a way as all can be examined with the greatest ease.” (_Vide_ ‘Report on the New Cattle Market and Abattoirs proposed to be erected at Carolina Port, Dundee,’ by W. Mackison, F.R.I.B.A., &c., Town Surveyor, Dundee). CHAPTER XXX. CEMETERIES. Amongst the many duties that a town surveyor has to perform is sometimes included that of laying out land for a large burial ground or cemetery, and its management after construction. Power is given to all local authorities to become burial authorities by the Public Health Interments Act 1879, and so strongly is the need felt for what is called extramural interment, that the Local Government Board may compel a local authority to provide and maintain cemeteries. Power is also given for the compulsory purchase of land for this purpose (see sections 175, 176, of the Public Health Act 1875), and the cemetery may be placed either within or without the district over which the local authority exercise their jurisdiction, and many other privileges are granted in order to encourage the acquisition of land so far removed from habitations as to make the burial ground as sanitary as the practice of burying human bodies can be made.