The Voynich Manuscript dates to the early 15th Century

"University of Arizona researchers have cracked one of the puzzles surrounding what has been called "the world's most mysterious manuscript" -- the Voynich manuscript, a book filled with drawings and writings nobody has been able to make sense of to this day.

Using radiocarbon dating, a team led by Greg Hodgins in the UA's department of physics has found the manuscript's parchment pages date back to the early 15th century, making the book a century older than scholars had previously thought.

Currently owned by the Beinecke Rare Book and Manuscript Library of Yale University, the manuscript was discovered in the Villa Mondragone near Rome in 1912 by antique book dealer Wilfrid Voynich while sifting through a chest of books offered for sale by the Society of Jesus. Voynich dedicated the remainder of his life to unveiling the mystery of the book's origin and deciphering its meanings. He died 18 years later, without having wrestled any its secrets from the book.

"Is it a code, a cipher of some kind? People are doing statistical analysis of letter use and word use -- the tools that have been used for code breaking. But they still haven't figured it out."

More: http://www.sciencedaily.com/releases/2011/02/110210153016.htm

Copiale Cipher, an 18th century secret code is broken

The "75,000-character Copiale Cipher finally has been broken.

The mysterious cryptogram, bound in gold and green brocade paper, reveals the rituals and political leanings of an 18th-century secret society in Germany. The rituals detailed in the document indicate the society had a fascination with eye surgery and ophthalmology, though it seems members of the society were not eye doctors."

The code was broken by a team led by Kevin Knight.

"To break the cipher, Knight and colleagues Beáta Megyesi and Christiane Schaefer of Uppsala University in Sweden tracked down the original manuscript, which was found in the East Berlin Academy after the Cold War and now is in a private collection. They transcribed a machine-readable version of the text, using a computer program created by Knight to help quantify the co-occurrences of certain symbols and other patterns."

Read more: http://www.sciencedaily.com/releases/2011/10/111025102320.htm