. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. Fig. .3986.—Plan of System of Condensation at Abattoirs in East Forty-fifth Street, New York City. dryers being drawn off by fans. After thorough con-densation these vapors are delved into the East River,twenty feet below low-water mark. Various methods have been tried to prevent the nuis-ance from fat rendering. DArcets method is to treatthe fat with sulphuric acid ; one hundred pounds of fatchopped fine are rendered at a temperature of 200° 198 REFERENCE HA
. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. Fig. .3986.—Plan of System of Condensation at Abattoirs in East Forty-fifth Street, New York City. dryers being drawn off by fans. After thorough con-densation these vapors are delved into the East River,twenty feet below low-water mark. Various methods have been tried to prevent the nuis-ance from fat rendering. DArcets method is to treatthe fat with sulphuric acid ; one hundred pounds of fatchopped fine are rendered at a temperature of 200° 198 REFERENCE HANDBOOK OF THE MEDICAL SCIENCES. with fifty parts water and one part sulphuric acid. This, though suc-cessful in parts of Europe, has not been adopted in the United cost of the sulphuric acid and of the extra handling has preventedits economical adaptation. Cooks method, consisting in chopping the fat finely and melting atabout 120° F., forms the basis of various processes of manu-facturing oleomargarine. It is a slow and expensive pro*cess, and therefore unadapted to ordinary tallow rendering. In the manufacture of oleomargarine the fat is washed fortwenty-four hours in ice-water to removethe animal heat. It is then transferred tothe hashing machine, heated for an hourto about 120 F., and allowed to settle foranother hour. The melted fat is then si-phoned off to the cooling boxes, where itremains four days to seed or mass is then pressed between platescovered with cloths to remove the oil is run into tierces, and the stearineis sold to manufacturers of candles and re-fined lard
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmedicine, bookyear188
