TO DISINFECT ROOMS.

The disinfection of a room is not complete unless the walls have been

thoroughly cleansed. If they are papered, the paper must be removed

and the surface beneath carefully scraped and washed. If the walls are

painted, they should be washed with caustic soda. The ceiling should

also be subjected to a similar treatment.

* * * * *

Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 9 / 213 题