Reuters reports today that a manuscript has been found in Nantes, France in a public library written by Leonardo Da Vinci in secret code from right to left.  There seems to be no doubt that it was written by his hand. 

A journalist discovered the document which was part of a donation made to the library in 1872 by a rich chap called Pierre-Antoine Labouchere.  This is the second major find in this collection.  Two years ago, a manuscript by Mozart was unearthed among all these papers.  Labouchere seems to have hoovered up a random assortment of stuff in his life.