There is a short treatise by John Milton, who was a student at Christ's from 1625, published two years before his death, called "Artis Logicae Plenior Institutio ad Petri Rami Methodum concinnata". It was one of the last commentaries on Ramist logic. Although composed in the 1640s, it was not published until 1672. Milton, whose first tutor at Christ's William Chappell used Ramist method, can take little enough credit for the content. Most of the text proper is adapted from the 1572 edition of Ramus's logic; most of the commentary is adapted from George Downham's "Commentarii in P. Rami Dialecticam" (1601)—Downham, also affiliated with Christ's, was a professor of logic at Cambridge. The biography of Ramus is a cut-down version of that of Johann Thomas Freigius (1543–83).