“ They are made of a thin paste of very fine flour, baked between “wafer irons” over a charcoal fire till the thin stratum of paste becomes dry and brittle and the flour starch is partly transformed into glutinous adhesive dextrin. The cake is cut into round disks with suitable steel punches. Bright non-poisonous colouring matter is added to the paste for making coloured wafers. They are also made of gelatin. Wafers of dry paste are used in medical practice to enclose powders or other forms of drugs, thus rendering them easy to swallow. ”