been described as "the creature of late-fifteenth-century Italian presses". Paraphrase based editions An anonymous Greek paraphrase is speculatively attributed to the 5th-century philosopher Proclus. It is often referred to as the Proclus' Paraphrase although its authenticity is questioned, being described as "very doubtful" by Professor Stephan Heilen. The content of the Paraphrase is close to that of manuscripts of the Tetrabiblos, but it uses simplified text with the aim of providing what Heilen calls "a more easily understandable version of the difficult original work". There is no modern critical edition of this text. The oldest extant manuscript is dated to the 10th century and housed in the Vatican Library (Ms. Vaticanus gr.1453, S. X., ff.1–219). Some of the text of the Paraphrase was published with a Latin translation and Preface by Philipp Melanchthon in Basel, 1554, but this was not widely circulated. A full reproduction with an accompanying Latin translation was made around 1630 by the Vatican scholar Leo Allatius "for his own private gratification" and this was published by the Elzevir typsetters in Leiden, 1635, apparently without Allatius's knowledge or consent. Allatius' Latin translation was used as the source of all English translations of the Tetrabiblos prior to the Robbins' edition of 1940. These include translations made by John Whalley (1701); the Whalley "corrected edition" made by Ebenezer Sibly and his brother (1786); J.M. Ashmand (1822); James Wilson (1828); and other 19th-century privately circulated manuscripts such as that of John Worsdale. Greek manuscripts Although no copies of Ptolemy's original manuscript remain, there are other ancient works, such as Hephaistio's Apotelesmatics I, which describe or reproduce some of its passages. These have been used to help verify disputed areas of content. The oldest fairly complete Greek manuscript of the text (rather than the paraphrased edition made of it) is dated to the 13th century. Two or three others are dated to the 14th century but most are dated to the 15th and 16th centuries. In the 'Introduction' to his 1940's translation, Frank Eggleston Robbins reported the existence of at least 35 manuscripts containing all or a large part of the Tetrabiblos in European libraries. The first printed edition was made in 1535 with an accompanying Latin translation by the German classical scholar Joachim Camerarius. This was reprinted in 1553 and is "notable for offering the first Latin translation based upon a Greek rather than Arabic source". Robbins noted the page