HOW TO PURIFY FOUL WATER

Two ounces of permanganate of potash thrown into a cistern will purify

foul water sufficiently to make it drinkable. This is the disinfectant

known as “Condy’s solution.” It is used in destroying the odors in the

hold of vessels, and for many other disinfectant uses.

Progress and Achievements of the Colored People Containing the Story of the Wonderful Advancement of the Colored Americans—the Most Marvelous in the History of Nations—Their Past Accomplishments, Together With Their Present-day Opportunities and a Glimpse Into the Future for Further Developments—the Dawn of a Triumphant Era. A Handbook for Self-improvement Which Leads to Greater Success · 第 409 / 421 题