I cracked the code of Leonardo da Vinci

A funny story ! Not far from Chambord, my wife and I bought a royal post house from the early 16th century where on one of the chimneys was a hopscotch. We studied the game hopscotch, and, in particular, by studying the pills of oculists where on some hopscotch was engraved. We discovered a reading code used during the Gallic Wars. Continuing to study the house, we consulted the works of Leonardo da Vinci. And here we found the map of our post office! However, the text, associated with the drawings, read in Italian was inconsistent. We had, therefore, the idea to apply the Gallo-Roman code previously discovered. And, reports of Engineers appeared to us ...