The title of an ancient law book, supposed to have been written by a judge who was confined in London's Fleet prison. It is written in Latin and is divided into six books. The author lived in the reigns of Ed. II and Ed. III - A.D. 1306 till A.D. 1377. During this period the English law was greatly improved, and the lawyers and judges were very learned. Hale's History says of this work, "that it was for the most part law, until the alteration of tenures took place."