Whatever improvements may have been introduced by later manufacturers, the principle involved in the meat-preserving processes is nearly as M. Appert established it forty years ago. His plan consisted in removing the bones from the meat; boiling it to nearly as great a degree as if intended for immediate consumption; putting it into jars; filling up the jars completely with a broth or jelly prepared from portions of the same meat; corking the jars closely; incasing the corks with a luting formed of quicksilver and cheese; placing the corked jars in a boiler of cold water; boiling the water and its contents for an hour; and then allowing the cooling process to supervene very gradually.
Until the recent disclosures concerning the preserved meats in the government depôts, the extent of the manufacture, or rather preparation, was very little known to the general public. In the last week of 1851, an examination, consequent on certain suspicions which had been entertained, was commenced at the victualling establishment at Gosport. The canisters--for since Appert's time stone jars have been generally superseded by tin canisters--contain on an average about 10 pounds each; and out of 643 of these which were opened on the first day's examination, no fewer than 573 were condemned as being utterly unfit for food. On the next day, 734 were condemned out of 779; and by the fourth day, the number examined had risen to 2707, of which only 197 were deemed fit for food. Such wretched offal had been packed in the canisters, instead of good meat, that the stench arising from the decomposing mass was most revolting; the examiners were compelled to use Sir William Burnett's disinfecting fluid abundantly, and even to suspend their labours for two or three days under fear of infection. The canisters formed part of a supply sent in by a contractor in November 1850, under a warrant that the contents would remain good for five years; the filling of the canisters was understood to have been effected at Galatz, in Moldavia, but the contractor was in England. The supply amounted to 6000 canisters, all of which had to be examined, and out of which only a few hundred were found to contain substances fit for food. Instead of good meat, or in addition to a small quantity of good meat, the examiners found lung, liver, heart, tongue, kidney, tendon, ligament, palate, fat, tallow, coagulated blood, and even a piece of leather--all in a state of such loathsome putridity as to render the office of the examiners a terrible one.