To saturated boric-acid solution Oj, add green soap to make a good
suds. Boil half an hour. To this add iodoform ℥j, then boil 15 minutes.
When cool add carbolic acid (95 per cent.) ʒj, stir solution, dip
gauze, and roll in strips. Keep in sterile glass jars.
Castile soap is a good substitute for green soap.