And here I would observe that most of the bad odour into which sewage farming has fallen of late years is distinctly traceable to the common absence of sufficient regularly contoured and neatly cut distribution carriers resulting from parsimony about wages bills natural to the ratepayers’ representatives in Council, and often to the manager’s dependence on a borough surveyor’s coming to the farm with his level and staff for great measures, or on his own guesses for smaller works, instead of using an instrument to peg out every distribution carrier at the right moment. [Sidenote: Attract good labour.] There is another important outlay of capital to be provided for in every complete sewage scheme, which should embrace sufficient good labourers’ houses and gardens in order to attract and retain on the spot the best class of workers. [Sidenote: Summary of the experience of a lifetime.] To sum up the general conclusions to which my experience points, and which I trust may prove useful to district councillors, they are as follows:— 1. In works of sewerage, limit and regulate, as far as possible, the volume of sewage by excluding subsoil water and clean surface water. 2. Where the outfall sewage enters the disposal works provide a pair of open catch-pits (or grit-chambers), each twice as wide as, and 2 feet deeper than the sewer, with sluices allowing the sewage to pass through one pit at a time in its free course, while the other pit is being dried and the deposited detritus dug out. The depth below sewer invert may be more than 2 feet, and length of catch-pit is immaterial, but I confine its width to twice that of the sewer in order to conserve sufficient velocity in the current to carry forward organic matter, paper, etc., and leave only clean sand and gravel in these catch-pits. Continuing the course by open channel (of same width as outfall sewer), it should expand to five or six times its width, forming the screening chamber, and thence discharge into the 3. Depositing tanks. These are best formed in concrete with smooth surface, with a semicircular level weir from which the liquid overflows into a semicircular collecting open carrier leading to the aerobic process on land or contact bed. The semicircles above referred to are struck from centre of the inlet to depositing tank with a radius of 50 feet or more. The weir level should be at least 1 inch below that of invert of inlet, and the depth of tank immediately under this point should be governed by consideration of the facility of drawing off the sludge by valve at that depth to the sludge drying beds by gravitation if possible, or pump if necessary, and from this sludge emptying valve the smooth concrete bottom of tank slopes up to the semicircular weir above described.