Marble—to Whiten. (Lady Wensleydale.)
Ingredients: 4 lb. of pearl ash, ¼ lb. of American ashes, ½ lb.
of black soap, 2 lbs. of whitening.
Boil all 20 minutes in 1 gallon of water. Lay it on hot with
a plasterer's brush; let it remain on 24 hours, scrub it off with
warm water after that.
Next, sluice it well with cold water, and dry with a soft
cloth; if any sticks in the ornamental parts, clean them with a
small brush. Repeat the whole operation a second time if
necessary.
The mixture burns, so take care it does not touch the walls
nor the looking glass nor picture frames—nor your own fingers.
[“Ambora Soft soap, a new cleanser, is excellent for cleaning
not only marble, but tiles, flooring, and white painted wood, &c.,
and avoids the danger ascribed to the use of above recipe.]