The fatty and oil liquors drawn from the digester fall into a tank, and the fat and grease collecting on the surface are skimmed off to be passed to a lower tank. All tanks are kept at a certain degree of temperature by means of a steam-heated coil. The fat and oil reclaimed in this manner are subsequently treated for their yield of glycerine, the final residue entering into the preparation of soap and other articles. The solid residues recovered from the disintegrator, representing the fibres from the meat, fish offal and other solid matter, constitute an excellent poultry food. According to the analyses which have been made it is rich in the albuminoids and phosphates. While the foregoing naturally represents the foremost and greatest phase of salvage activity pursued by the Liverpool Corporation it by no means exhausts their efforts in this direction. Other refuse is recovered and treated for some one or other specific commercial purpose. All bones are collected, washed, and boiled to secure the fat, the solid matter afterwards being ground into meal. Vegetable refuse, of which large quantities are forthcoming, especially from the markets, are dried and stored, having been found useful as a constituent for poultry foods. Fish, both offal and unsold inedible surplus, is converted directly into fertilizer. Wooden refuse, recovered from dust-bins and other sources, is heated at low temperature to allow carbonization for sale as charcoal. Large quantities of straw, both clean and soiled, are also brought in, being recovered from packing-cases and crates. The clean straw is segregated to be chopped finely, and as such meets with a ready sale among poultry-raisers because it constitutes a very effective scratching material. The dirty straw, together with soiled paper and old wooden boxes incapable of other treatment, as well as other light refuse, are burned in a special furnace which has been installed, care being observed to collect the ash. As the latter contains approximately 12 per cent. potash it forms a first-class fertilizer. Banana stalks are likewise rich in potash, and so, by submitting the stalks, large quantities of which are forthcoming from the fruit markets under normal conditions, to a special treatment, this potash is recovered and is turned over to the soap-makers. Oyster shells are washed, calcined, and then ground for sale as grit to poultry-raisers. Damaged and condemned eggs are frequently received in large quantities from the docks, warehouses and wholesale establishments. One consignment numbered no fewer than a quarter of a million. Instead of being used as fuel for the destructor, these eggs are boiled, then chopped, dried and together with the shells are finely ground into meal for use as chicken food.