_Take of the diachylon one pound, purified mercury half a pound,
triturate the mercury with a little hog’s lard or turpentine, then melt
the diachylon, and incorporate the triturated mercury into it._
This is principally fit for venereal cases, for buboes, and other hard
tumours; it may also be put to shankers and very bad ulcers; but it
should never be used unless necessity requires it.