. Preventive medicine and hygiene. should be placedin each pot. The sulphur is preferably used in the form of flowers of sul-phur. If it is in sticks or rolls it should be crushed into a powder, whichmay conveniently be done by placing the sulphur in a stout box andpounding the lumps with a heavy timber. The pot holding the sulphurshould be placed in a tub of water, as shown in Fig. 165. The water notonly diminishes the danger from fire and protects the floor, but by itsevaporation furnishes the moisture necessary to hydrate the sulphurdioxid, upon which the disinfecting power of the gas depen
. Preventive medicine and hygiene. should be placedin each pot. The sulphur is preferably used in the form of flowers of sul-phur. If it is in sticks or rolls it should be crushed into a powder, whichmay conveniently be done by placing the sulphur in a stout box andpounding the lumps with a heavy timber. The pot holding the sulphurshould be placed in a tub of water, as shown in Fig. 165. The water notonly diminishes the danger from fire and protects the floor, but by itsevaporation furnishes the moisture necessary to hydrate the sulphurdioxid, upon which the disinfecting power of the gas depends. Thus themoisture is furnished automatically and does away with the necessityfor its introduction by means of steam or a spray. Although the specific gravity of sulphur dioxid is greater than that of air,when hot it rises, aided bythe upward current pro-duced by the burning sul-phur. Hence the potsshould not be on the flooror at the bottom of the holdin the case of vessels lestbeing deprived of oxygen, beThe pots may therefore. Fig. 165.—The Pot Method of Burning Sul-phur. the cold gas settle and the flameextinguished before all the sulphur is burnedbe placed upon a table or box or, in the holds of ships, upon piles of bal-last or on the tween decks. Eoberts and McDermott ^ suggest that the sulphur be burned uponpans arranged upon a rack as shown in Fig. 166, instead of pots. Theadvantages of this stack burner are that a large amount of sulphur maybe more quickly burned in less time than is possible with the pot , the intense heat below each pan in the stack burner aids thecomplete and rapid burning of sulphur in the pans above it. A stackburner will burn sulphur of too poor a quality to give any satisfaction inthe pots. The ground sulphur is placed in the pans, the surface of thesulphur is moistened with alcohol, and ignited. Each shelf should belighted separately to save time. The upper pan or pans may be filledwith water to hydrate the sulphur dioxid neces
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Keywords: ., bookauthorwh, bookcentury1900, bookdecade1910, booksubjecthygiene
