Made by maceration and percolation of hydrastis, 1000 parts add water to
the percolate and evaporate. Add water to the residue, set aside 24
hours and filter; add enough water to the filtrate to make 500 parts;
then add glycerin 500.
DOSE.--Horses and cattle, 2 drs. to 1 oz.; sheep and pigs, 1 to 2 drs.;
dogs, 5 m. to 1 dr.