164. Lapis lasuili: i.e. a stone that is cold and dry in the first degree; principally, it purges the melancholic humour, because of its being heavy; it serves well against the swooning that is caused by the melancholic humour; it should be administered mixed with Theodoricon anacardi; it is to be noted that it is from this stone that the blue azure [pigment] is made. If the seed of fennel be boiled in wine and the powder of this stone be put through it, it will help with every disease of the spleen, as we have said.