- 1. Whitewash 1 gallon + chloride of lime 6 ounces.
- 2. Whitewash 1 gallon + crude carbolic acid 7 ounces.
- 3. Whitewash 1 gallon + formalin 4 ounces.
The same may be applied with brushes or, more rapidly, sprayed on with a pump; the surface soil of the yard and surroundings should be removed to a depth of 5 or 6 inches, placed in a heap and thoroughly mixed with quicklime. The fresh surface of soil thus exposed may be sprinkled with a solution of a chemical disinfectant as above described.
Fig. 111.—Formaldehyde generator used in city work for room disinfection.
Fig. 112.—Government formaldehyde generator.
“Portions of walls and ceiling not readily accessible may be disinfected by chlorine gas liberated from chloride of lime by crude carbolic acid. This is accomplished by making a cone of 5 or 6 pounds of chloride of lime in the top of which a deep crater is made for the placement of from 1 to 2 pints of crude carbolic acid. The edge of the crater is thereupon pushed into the fluid, when a lively reaction follows. Owing to the heat generated, it is advisable to place the chloride of lime in an iron crucible (pot), and to have nothing inflammable within a radius of two feet. The number and location of these cones of chloride of lime depend on the size and structure of the building to be disinfected. As a rule it may be stated that chlorine gas liberated from the above sized cone will be sufficient for disinfecting 5200 cubic feet of air space.”
Liquid manure, leachings, etc., where collected are thoroughly disinfected by chloride of lime applied in the proportion of 2 parts to 1000 of fluid.
Fig. 113.—Chamber used in government work for formaldehyde disinfection. The small cylinder at the side is the generator.