. Pathogenic microörganisms; a practical manual for students, physicians, and health officers . ILLUS AND BACTERIOLOGY OF TUBERCULOSIS chloride solution ( antiformin) in dilutions which quickly dissolvenon-acid fast bacteria. The tubercle bacillus in sputum when exposed to direct sunlight iskilled in from a few minutes to several hours, according to the thick-ness of the layer and the season of the year; it is also usually destroyedby diffuse dayhght in from five to ten days when placed near a windowin fine powder. Protected in cloth the bacilli survive exposure tolight for longer periods. Tu
. Pathogenic microörganisms; a practical manual for students, physicians, and health officers . ILLUS AND BACTERIOLOGY OF TUBERCULOSIS chloride solution ( antiformin) in dilutions which quickly dissolvenon-acid fast bacteria. The tubercle bacillus in sputum when exposed to direct sunlight iskilled in from a few minutes to several hours, according to the thick-ness of the layer and the season of the year; it is also usually destroyedby diffuse dayhght in from five to ten days when placed near a windowin fine powder. Protected in cloth the bacilli survive exposure tolight for longer periods. Tuberculous sputum expectorated uponsidewalks, etc., when left undisturbed in the shade may be infectiousfor weeks, but when exposed to the action of direct sunlight will, inmany cases, especially in summer, be disinfected by the time it is incondition to be carried into the air as dust, but not before childrenand flies have an opportunity of getting into it. The action of sunlightand other more important hygienic reasons suggest that the consump-tive patients should occupy light, sunny
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