A manual of practical hygiene for students, physicians, and health officers . i; polviiicri/.-dioii iiihKt prcssinf. I liis niixfiin-, wliifli fori-tiiiiis 150 {j^nuiiM of tlic chloride to the liter, is known eh Formf)\u\ (oriiiMldcliydc soiiilioii iiHcd slionld he |)r;iflic,;dly fn-c from , vvhifih, while of ii(» |)r;iclic;d iiitcrcsf, under ordinary eireiim-HliiiKtes, Ih ail oI))eelioiial)le iiiipiirily when fli< solution is lu-aled nnder))i(!ssnre, since \\\v\\ if. nniles with a eorresponrjin^ arnonnl of fr»rnial-(lohyde io form inert metli\ l;il. The cover is (i


A manual of practical hygiene for students, physicians, and health officers . i; polviiicri/.-dioii iiihKt prcssinf. I liis niixfiin-, wliifli fori-tiiiiis 150 {j^nuiiM of tlic chloride to the liter, is known eh Formf)\u\ (oriiiMldcliydc soiiilioii iiHcd slionld he |)r;iflic,;dly fn-c from , vvhifih, while of ii(» |)r;iclic;d iiitcrcsf, under ordinary eireiim-HliiiKtes, Ih ail oI))eelioiial)le iiiipiirily when fli< solution is lu-aled nnder))i(!ssnre, since \\\v\\ if. nniles with a eorresponrjin^ arnonnl of fr»rnial-(lohyde io form inert metli\ l;il. The cover is (irndy fixed hv the tnrn-l);les, and then the laiu|) is put in operation. When the franjre showHa. |)ressnn! of three; atmospheres, the f)ntlet, (uhe is introdnecd into thekeyhole of the door of th(! room to be disinfeetc<l, and the valvf! Ih ojK^ncflgradually so as to release the vapor. The disenga^eni(;nt of the Ih Fio. Lentzs reffcncrator. continued until a sufficient amount of the liquid, based upon the amountof air space treated, is consumed. According to Trillat, in the case ofa room of ordinary size, say 18 feet square and 10 from floor to ceiling,the operation should require about an hour. The objections urgedagainst this form of apparatus are its cost, the want of uniformitv inthe amount of gas delivered within a given time, and the danger of 602 DISINFECTANTS AND DISINFECTION. Fig. 100. explosion from the possibility of the uon-working of the valve, or fromobstructiou by one cause or another of the outlet tube. A number of other apparatuses for the same purpose have beendevised, and to several of them these oljjections no not apply. One ofthese is the regenerator made by the Sanitary Construction Company,and used extensively by public authorities, (See Fig. 98.) It consistsof a copper reservoir, holding about 3 quarts, from the bottom of whichleads a quarter-inch copper tube, Avhich forms a c


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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjecthygiene