To clean mirrors
The greatest care should be taken in cleaning a mirror, to use only the softest articles least the glass should be scratched. It should first be dusted with a feather brush, then washed over with a sponge, dipped in spirits of wine, to remove the fly spots. After this, it should be dusted with powder blue in a thin muslin bag, and finally polished with an old silk handkerchief.
Source: Semi-Weekly Standard (Raleigh), August 19, 1864 as found on www.chroniclingamerica.loc.gov