clear and white but which is very transparent. For that reason it is
used in windows the same as glass. Such a window can be seen in a
certain old church of Marieburg.
"Albertus writes the same and says that in the place of the lead which
is used to strengthen the glass, smooth pieces of wood are used.
Bermannus. "That is right.
Ancon. "Moreover he writes that he himself had seen such large quantities
of it in Germany that they filled wagons with it. He says that it is
found in France together with gypsum, a part of which is of the very
"Albertus is right. When our people suffer from dysentery they take a
piece the size of a walnut, powder it, place it in sour wine and drink
it. Many people have been cured of sickness in this way.
"It is obviously related to gypsum since the Arabs drink the latter to
stop the expectoration of blood, to stop menstrual flow and to cure
"Dioscorides writes that gypsum will stop the flow of blood but when
drunk causes strangulation. Galen does not give it as a drink but
recommends that a plaster be made from gypsum, the white of an egg,
fine wheat flour and some pleasant binder and used to stop bleeding.
"Then it is safer to drink selenite without wine. Up to now, it has
injured no one and I have seen and heard of many people being helped