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25.buried at greetri of faecalmatter is one of the- first"pr-oblems which needs to be tackled.100. Where there is house-to-house pailcollection the problem presents no difficulty,A very effective 6ystem has been in operation inone of the BuburbB »f Kano for the past five years andhas given an 'average output of 9,00C ton6 of compostper annum. It is eagerly bought at 1d« perdonkey load (about 1/8d. per ton) and the schemeis self-supporting,101. Owing to the present shortage of motortransport, lorries are used only for the dumping ofstreet sweepings and garbage. Pans are head-loadedto the pits, one labourer making trips to 15 groupsof five houses per day.The street sweepings (leaves, etc.) are pickedfree from tins and glass and spread in a 6" layeron the mixing floor. A 2" layer of faeces is thenspread, covered by a second 6" layer of garbage and themixture,, worked to a thick paste. (The labourers 1legs and feet are protected by wrappings). Thispaste is then spread on the floor cf a concrete pit10* x 50', and covered with a layer of dry sweepings sa email space is left to allow the pile to be turned,A second layer of paste and dry material is addedthe following day. There are 1 6 pits in the unit,102. The first turning takes place after 5days, when fly larvae have been driven by the heatof fermentation towards the top of the heap; theyare effectively killed by turning the hot materialover them. A second turning is given 10 days afterthe first and the manure is removed to stacks 15days after the Becond turning. There was a completeabsence of flies both over the pits and in the etaoks.103« Water is not easily available and is notadded. In a series of pits in a second Kano suburbwatering is being carried out to facilitate breakdown.At the Kaduna pits* which are kept uniformly moist bywatering and roof ing, higher fermentation temperaturesand quicker breakdown have been obtained. Rapid breakdown'is ohtair.edby composting the offal and stomach contentsfrom the Sebcn Gari (Kano) abattoir.10li. Anolyses of the composts were not available.They appear to give a performance similar .to that offarmyard manure e.g. Kano 1945. Unthreshed Guinea cornlb. per acre.No Manure • • , 1,080Farmyard Manure ... 1,400Offal Compost ... 1,540Faeces Compost ... 1,760The chief drawback of central compostfactories ia the coat of transport of such bulkymaterials where pBck animals are not available.SOIL REGENERATION./