Modern historiography is essentially ignored, particularly in the area of basic chronology of known events in the recent and distant past of Europe. Geological as well as geographical evidence that was readily available even as far back as Over de Linden's time is also mostly absent from the manuscript. The earliest portion of the Oera Linda Book, namely "Frya’s Tex", was supposedly composed in 2194 BC, whereas the most recent part, the letter of Hidde Oera Linda, dates to AD 1256. Almost half of the entire book comprises "The Book of Adela’s Followers", the original text around which the rest grew. It is purported to have been compiled in the 6th century BC from a mixture of contemporary writings and ancient inscriptions. The last two sections of the Oera Linda Book contain a number of lacunae and the book itself breaks off in mid-sentence. It also describes a lost land called Atland (the name given to Atlantis by the 17th century scholar Olof Rudbeck), which was supposedly submerged in 2194 BC, the same year as 19th century Dutch and Frisian almanacs, following traditional Biblical chronology given for Noah's flood. The Oera Linda Book is divided into six sections, further subdivided into a total of 53 chapters.