In April 2007, it was announced that a new text had been found in the palimpsest, which was a commentary on Aristotle's "Categories" running to some 9 000 words. Most of this text was recovered in early 2009 by applying principal component analysis to the three color bands (red, green, and blue) of fluorescent light generated by ultraviolet illumination. Dr. Will Noel said in an interview: "You start thinking striking one palimpsest is gold, and striking two is utterly astonishing. But then something even more extraordinary happened." This referred to the previous discovery of a text by Hypereides, an Athenian politician from the fourth century BC, which has also been found within the palimpsest. It is from his speech "Against Diondas", and was published in 2008 in the German scholarly magazine "Zeitschrift für Papyrologie und Epigraphik", vol. 165, becoming the first new text from the palimpsest to be published in a scholarly journal.