Show How Salt Helps Whitewash Whitewash- A little salt add added adde d to whitewash Improves It Some Someone Sonic Some one in the salt business or the lime business learns of it and advertises nd it and thereby increases Increases Increases In in- creases the me sale both of ot salt and of ot lime Silicate of so soda a added ed to the water In the time water hot-water heating apparatus apparatus ap up- of a small house Is carried ever everywhere where and precipitated on the the- Internal walls of the pipes where It forms a protective film against rust rusta rust rust- a discovery J that proe proved profitable tIthe to- to the manufacturers of water glass glasS' New uses for familiar substances are constantly discovered and a new demand de do- mand for them Is create created Youths S Companion |