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139
In disinfection after infectious disease we use Formic Aldehyde
gas (30 tabloids to every 1,000 cubic feet). After Phthisis we
spray the room with chloride of lime (1-2 per cent.). For
disinfection of verminous rooms sulphur is used. When
necessary we employ Lingner's Glyco-Formal apparatus for
schools, etc.
By whatever method gaseous disinfection is practised it may
prove ineffectual on account of the fact that what is required is that
the disinfectant should be applied directly to infected surfaces of a
room. It is therefore better, wherever practicable, to apply the
disinfectant by washing or spraying. Accordingly we have adopted
the spray method in certain cases, and disinfectant solution
(chloride of lime, 1-2 per cent.) is sprayed on to walls, floors, etc.
Thorough and wet cleansing of infected surfaces is the
desideratum.
The number of separate rooms disinfected in 1907 was 1,178
comprised as follows:—874 cases of one room, 120 of two rooms,
16 of three rooms, and 4 of four rooms each.