72. Cinis omnis: i.e. all ashes; according to Avicenna, it has the drying and cleansing virtues, and he also says that the ash of styptic trees have the ability to stop bleeding, especially the ash of the ash-tree and of the oak; he also says that all ashes of human hair have the ability to cause the hair and down to grow, if it be mixed with oil and put on the head after it has been shaved; it warms the head and stops it sweating. Item, take the polypody fern of the oak, make ashes of it together with the wood of the twining stems of the ivy, and if these ashes be put into a bath of ash-tree and the head washed in it, it will stop migraine and give a good colour to the hair.