<p style='text-align: justify;'>Bifolium from a medical work dealing with general medical theory and anatomy: the humours and the formation of the organs of the body; description of the bones and the anatomy of the head. The main source of information is Avicenna, Al-qanūn fī l-ṭibb (‘Canon of medicine’; ed. Būlāq I:19, 25).</p>