171. Lapis agapidis: i.e. a stone; cold and dry. If it be mixed with apostolicon, it will draw any iron from a wound. If the powder of this stone be mixed with juice of dock and put in the wounds, it will heal them and clean them. If two ounces of the powder of this stone be given with juice of fennel, it will help with dropsy and paralysis; Rhases says if the powder of this stone be given with diaturbit, agaric, and powder of lapis lazuli, and they be mixed with juice of fennel and rue, it will purge principally the phlegmatic humour, and secondarily the melancholic humour; a great deal is written about the merits of this stone in the Antidotary of Avicenna.