be pressed into a mould. The resulting balls weighed from "one to one and a half ounces" (i.e. thirty to fifty grams). Finally, they were dried and brushed with a solution of gum and a few drops of walnut dye to make them black and shiny. The balls were reputed to be effective against chlorosis (hypochromic anaemia), rickets, leucorrhoea (non-bloody vaginal discharge), and more generally against anaemia and asthenia. The medication was extremely simple to use: the ball was to be soaked in water until it became amber in colour, when the solution was to be drunk. After use, the ball was simply put to dry in the air or in the shade. The balls were also used as a compress to treat bruises, wounds and strains. In addition to the balls, the Carthusian fathers also made a "medicinal wine", the alleged effects of which were diuretic and stomachic. A number of substances, mainly of plant origin, but also potassium bitartrate in very small doses, were combined in a sachet which the monks left to infuse for 24 hours in warm white wine. This medicine was developed by one of the monks of Koenigshoffen, Otto Brunfels (1488-1534). The library and the books of the Charterhouse The library of the charterhouse at Koenigshoffen was particularly rich in manuscripts, which the city of Strasbourg acquired in 1591. Jean Pappus made an incomplete list of 265 volumes, 342 manuscripts and 83 printed documents. Of these books, the Carthusian monks tried to reclaim in 1596 the "choir books" (used for the liturgy) as well as copies of works from the library. In 1600, their request was partially granted and the 83 printed books were returned, forming the basis of the future Molsheim Charterhouse library. The library was initially located in the "Böcklerhof" in the main courtyard. As the latter building was demolished, the library was transferred at an unknown date, but after 1744, to the former T cell, which was raised by one floor to accommodate the entire collection. The top floor of this building was then connected to a "gallery", probably a mezzanine, which facilitated access to the works. As cell T was located on the right of the passage joining the church to the southern cloister, the library extended over the latter passage. During the French Revolution, the inventory carried out on July 13, 1790, shows that the monastic library contained 4,133