1. On a farm at some distance from roads and houses, the cheapest plan is to form a bank of earth about 18 inches high, enclosing a rectangular area into which the wet sludge can be run or pumped out of depositing tanks, and left alone until dry enough for cartage, when it can be used on the farm or sold to neighbouring farmers for a shilling or two a load. 2. A wall of farmyard _long_ manure may be used instead of earth, and trench 5 feet wide dug on each side of the longer sides of the rectangle, leaving 3 feet of ground between the wall and trench, on which men can stand to scoop the sludge over the wall when it has consolidated a little in the trench; the latter is then ready to receive the sludge from another tank emptying, which is again scooped over the wall on to a thin coating of farmyard manure, which has been scattered over the last layer of sludge in the rectangle; and thus in a year’s time a solid mass of the mixture is raised four or five feet high, and is in capital order for putting in drills for a crop of mangold wurtzel. This is the plan in use at the Camp Farm; it occupies little ground and smells only like rotten dung does during the few days carting to the mangold field. 3. Pressing by compressed air forcing a liquid mixture of sludge and lime into the interstices between cloths supported by vertical iron plates on a horizontal frame; and such pressing is a very expensive process, only resorted to when the sewage works are in a confined populated district where no accumulation of sludge can be tolerated. [Sidenote: Expert examination of neighbourhood a very necessary preliminary to any sewage scheme.] Before any sewage scheme is conceived a very careful survey of the neighbourhood ought to be made by a person who knows the requisites of a site for sewage disposal, especially if land irrigation is intended, because natural advantages of site both for tanks, main carriers, roads, etc., may make all the difference in the world in expense and efficiency not only in first cost of works but also in their use afterwards. And if land is to be acquired for sewage farming it will be very desirable to include in the purchase some neighbouring high lying area, not required for sewage disposal but for growing straw crops to be used on the farm. CROPPING A SEWAGE FARM. [Sidenote: Vegetation of some kind, useful or weeds, _will_ grow from sewage, and must be frequently removed from land or contact bed.] This is a matter of vital importance, because when sewage is _intermittently_ applied to land of any kind or to coke beds, vegetation of some kind or other must result and must be removed in order to leave a clear course for the next dose of sewage; the cost of removal and destruction of weeds will be found very great when contact beds are tried on any working scale and would be quite prohibitive if allowed to grow on irrigated land.