<p style='text-align: justify;'>A sixteenth-century copy of a Middle English commentary on Giles of Corbeil's verse treatise De urinis, closely related to Glasgow, University Library, MS Hunter 328. The contents are an aid to diagnosing disease by the colour of urine. In both articles sentences usually end with the name of an authority, e.g. Yssac, Avicenna, Egidius, Walterius, Gordianus. </p>