. Pathogenic microörganisms; a practical manual for students, physicians, and health officers . in a dairy pan not less than twelve inchesin diameter. The liberation of a large amount of gas in a short time more thancompensates for the loss by polymerization, and disinfection is effected by aquick union of the gas and organisms to be destroyed. Saturated solution ofaluminum sulphate may be used instead of concentrated sulphuric acid. 678 PRACTICAL DISINFECTION AND STERILIZATION Rapid Generation of Formaldehyde Gas for Large Chambers by the Methodof Dr. R. J. Wilson.—The generator (Fig. 209) i
. Pathogenic microörganisms; a practical manual for students, physicians, and health officers . in a dairy pan not less than twelve inchesin diameter. The liberation of a large amount of gas in a short time more thancompensates for the loss by polymerization, and disinfection is effected by aquick union of the gas and organisms to be destroyed. Saturated solution ofaluminum sulphate may be used instead of concentrated sulphuric acid. 678 PRACTICAL DISINFECTION AND STERILIZATION Rapid Generation of Formaldehyde Gas for Large Chambers by the Methodof Dr. R. J. Wilson.—The generator (Fig. 209) is made of ordinary iron steampipe and can be manufactured in any pipe-cutting establishment m a very fewhours. It consists of an outer steam jacket of six-inch pipe, two feet long, andcapped at both ends. Through the upper cap there is a four-mch opening, witha thread, through which projects an inner chamber for formalin. This chamberconsists of a four-inch pipe, twenty-two inches long, capped at the upper endand welded or capped at the lower end. The upper end of this pipe is so threaded.
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