76. Cornu serui: i.e. the horn of the deer; it is cold and dry. If it be burned and powder made of it and it be put on the flesh of the teeth, it will make them firm and it will help with their pain. If it be taken in a powdered mix in which there is powder of anise and of liquorice, it will prohibit the descent of the humours to the eyes; it is good against the disease known as haemoptysis, i.e. the spitting of blood; it is good for people who are deaf.