Pound pumice stone to a fine powder, and mix it with verjuice. Let it
remain several hours, then dip in a perfectly clean sponge, and rub the
marble with it till clean. Rinse it off with clear fresh water, and rub
it dry with a clean linen cloth.
Pound pumice stone to a fine powder, and mix it with verjuice. Let it
remain several hours, then dip in a perfectly clean sponge, and rub the
marble with it till clean. Rinse it off with clear fresh water, and rub
it dry with a clean linen cloth.