Martha Jefferson Randolph’s Recipe for Medicinal Use of Charcoal for Mary House Gilmer, 30 Jan. [1824], enclosed in Elizabeth Trist to Mary House Gilmer, 30 Jan. [1824]
the charcoal should be taken fresh from the fire and the moment it is cool enough beaten to an impalpable powder and sifted through fine muslin. when, immediately put in to a phial and corked tight, as exposure to the air destroys it’s virtue. if the coal is has been dead any time it must be...