The ruins consist of an amphitheatre (now almost entirely demolished, but better preserved in the 18th century), a theatre, and a very fine aqueduct in opus reticulatum, the quoins of which are of various colours arranged in patterns to produce a decorative effect.
Thus he avoids on the one side the opus operatum view, and on the other a merely receptionist position.
The seventh part of the Opus Majus (De Morali Philosophia), not given in Jebb's edition, is noticed at considerable length in the Opus Tertium (cap. xiv.).
Of this summary, or Opus Minus, part has come down and is published in Brewer's Op. Ined.
Most of his matchless odes were composed in honour of the Maulawi dervishes, and even his opus magnum, the Mathnawi (Mesnevi), or, as it is usually called, The Spiritual Mathnawi (mathnawi-i-ma`nawi), in six books or daf tars, with 30,000 to 40,000 double-rhymed verses, can be traced to the same source.