When applied to the gums, care should be taken to use a leech glass, as they are apt to creep down the patient's throat: a large swan's quill will answer the purpose of a leech glass. When leeches are gorged they will drop off themselves; never
tear
them off from a person, but just dip the point of a moistened finger into some salt and touch them with it.
Ill-Nature Sucks Poison from the Sweetest Flower.]
845. Quantity Removed
Leeches are supposed to abstract about two drachms of blood, or six leeches draw about an ounce; but this is independent of the bleeding after they have come off, and more blood generally flows then than during the time they are sucking. The total amount of blood drawn and subsequently lost by each leech-bite, is nearly half an ounce.
846. After Leeches Come Away
After leeches come away, encourage the bleeding by flannels dipped in hot water and wrung out dry, and then apply a warm spongiopiline poultice. If the bleeding is not to be encouraged, cover the bites with a rag dipped in olive oil, or spread with spermaceti ointment, having previously sponged the parts clean.