Signor John de Calabria had a digestive weakness of the stomach, and rheumatic cerebral disease, combined with superfluous heat and dryness of the liver and multiplication of choler.
There is first an elaborate discussion on diet and general mode of life; then he proceeds to draw up certain light medicines as a supplement, but it must have taken an extensive apothecary's shop to turn out the twenty-two prescriptions designed to meet every possible contingency.
One of the difficulties in the early days of the universities was to procure good MSS.

In the Paris Faculty, the records of which are the most complete in Europe, there is an inventory for the year 1395 which gives a list of twelve volumes, nearly all by Arabian authors.( 25) Franklin gives an interesting incident illustrating the rarity of medical MSS.

at this period.

Louis XI, always worried about his health, was anxious to have in his library the works of Rhazes.

The only copy available was in the library of the medical school.