The recovery of fat down to 1 per cent. of that contained in the crude material does not constitute the only outstanding advantage of the solvent extraction process. It enables the whole of the operations to be condensed into one task, completely dispensing with all auxiliary apparatus. The refuse is merely charged into the extractor and withdrawn in the form of powder, and, if condemned carcasses have been exploited, bone as well. What this means may readily be realized. Under the open steam digesting system--even with the wet and dry vacuum systems to a lesser degree--the refuse must first be cooked. The material upon withdrawal from the digester must be passed through the press, after which treatment it has to be disintegrated and dried. If the reclamation of the gelatinous or “stick” liquor, as it is called, be part of the process this also demands handling. Thus one may safely anticipate having to conform with five distinct and separate operations, involving intermediate handling and supplementary plant, while the loss of fat in passing from stage to stage is far heavier than may possibly be imagined. But, with the solvent extraction process, the numerous above-mentioned operations are resolved into one, and one only--the charging of the extractor with the refuse. The saving in labour by the elimination of all interhandling is obvious, which in these days of enhanced wage costs demands consideration, while there are no intermediate losses of oil. In so far as saving of time is concerned there is little, if any, difference. Under the solvent extraction method a period of eight to ten hours is required to deal completely with a charge of 4,500 to 9,000 lb. The fruits accruing from this latest manifestation of ingenuity in connection with the reclamation of waste may be tersely emphasized. The reclamation of the fat down to 1 per cent. being accepted, it may also prove interesting to indicate how effectively the nitrogenous or ammonia value of the product is preserved. The following represents a typical analysis of a meat meal, which, it should be pointed out, contains no bone whatever. The figures are:-- Per cent. Tribasic phosphate of lime (superphosphate) 3·25 Nitrogen 11·37 ⤷ = ammonia 13·81